Home / 1,555.42-2,145.36-1,057.19

Finding the Fourth Proportional to 1,555.42, 2,145.36 and 1,057.19

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Solution

The fourth proportional to 1,555.42, 2,145.36 and 1,057.19 is: 1,458.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.42 : 2,145.36 = 1,057.19 : x
  2. Step 2: Convert to fraction form
    1,555.42/2,145.36 = 1,057.19/x
  3. Step 3: Cross multiply
    1,555.42x = 2,145.36 × 1,057.19
  4. Step 4: Simplify right side
    1,555.42x = 2,268,053.14
  5. Step 5: Solve for x
    x = 2,268,053.14/1,555.42
  6. Step 6: Final answer
    x = 1,458.16

Related Problems

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Half scale
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Double scale
Find fourth proportional to 1,556.42, 2,146.74 and 1,058.19
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.