Home / 1,681.28-2,320.54-935.50

Finding the Fourth Proportional to 1,681.28, 2,320.54 and 935.50

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Solution

The fourth proportional to 1,681.28, 2,320.54 and 935.50 is: 1,291.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681.28 : 2,320.54 = 935.50 : x
  2. Step 2: Convert to fraction form
    1,681.28/2,320.54 = 935.50/x
  3. Step 3: Cross multiply
    1,681.28x = 2,320.54 × 935.50
  4. Step 4: Simplify right side
    1,681.28x = 2,170,865.17
  5. Step 5: Solve for x
    x = 2,170,865.17/1,681.28
  6. Step 6: Final answer
    x = 1,291.20

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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.