Home / 1,681.17-2,320.02-935.12

Finding the Fourth Proportional to 1,681.17, 2,320.02 and 935.12

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Solution

The fourth proportional to 1,681.17, 2,320.02 and 935.12 is: 1,290.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681.17 : 2,320.02 = 935.12 : x
  2. Step 2: Convert to fraction form
    1,681.17/2,320.02 = 935.12/x
  3. Step 3: Cross multiply
    1,681.17x = 2,320.02 × 935.12
  4. Step 4: Simplify right side
    1,681.17x = 2,169,485.50
  5. Step 5: Solve for x
    x = 2,169,485.50/1,681.17
  6. Step 6: Final answer
    x = 1,290.46

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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.