Home / 1,681.20-2,320.14-935.17

Finding the Fourth Proportional to 1,681.20, 2,320.14 and 935.17

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Solution

The fourth proportional to 1,681.20, 2,320.14 and 935.17 is: 1,290.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681.20 : 2,320.14 = 935.17 : x
  2. Step 2: Convert to fraction form
    1,681.20/2,320.14 = 935.17/x
  3. Step 3: Cross multiply
    1,681.20x = 2,320.14 × 935.17
  4. Step 4: Simplify right side
    1,681.20x = 2,169,725.32
  5. Step 5: Solve for x
    x = 2,169,725.32/1,681.20
  6. Step 6: Final answer
    x = 1,290.58

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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.