Home / 1,685.17-2,324.19-1,055.13

Finding the Fourth Proportional to 1,685.17, 2,324.19 and 1,055.13

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Solution

The fourth proportional to 1,685.17, 2,324.19 and 1,055.13 is: 1,455.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685.17 : 2,324.19 = 1,055.13 : x
  2. Step 2: Convert to fraction form
    1,685.17/2,324.19 = 1,055.13/x
  3. Step 3: Cross multiply
    1,685.17x = 2,324.19 × 1,055.13
  4. Step 4: Simplify right side
    1,685.17x = 2,452,322.59
  5. Step 5: Solve for x
    x = 2,452,322.59/1,685.17
  6. Step 6: Final answer
    x = 1,455.24

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Half scale
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Double scale
Find fourth proportional to 1,686.17, 2,325.57 and 1,056.13
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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.