Home / 1,548.54-2,138.86-1,128.23

Finding the Fourth Proportional to 1,548.54, 2,138.86 and 1,128.23

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Solution

The fourth proportional to 1,548.54, 2,138.86 and 1,128.23 is: 1,558.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,548.54 : 2,138.86 = 1,128.23 : x
  2. Step 2: Convert to fraction form
    1,548.54/2,138.86 = 1,128.23/x
  3. Step 3: Cross multiply
    1,548.54x = 2,138.86 × 1,128.23
  4. Step 4: Simplify right side
    1,548.54x = 2,413,118.41
  5. Step 5: Solve for x
    x = 2,413,118.41/1,548.54
  6. Step 6: Final answer
    x = 1,558.32

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Half scale
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Double scale
Find fourth proportional to 1,549.54, 2,140.24 and 1,129.23
Similar ratio
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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.