Home / 1,402.17-2,103.27-918.30

Finding the Fourth Proportional to 1,402.17, 2,103.27 and 918.30

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Solution

The fourth proportional to 1,402.17, 2,103.27 and 918.30 is: 1,377.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,402.17 : 2,103.27 = 918.30 : x
  2. Step 2: Convert to fraction form
    1,402.17/2,103.27 = 918.30/x
  3. Step 3: Cross multiply
    1,402.17x = 2,103.27 × 918.30
  4. Step 4: Simplify right side
    1,402.17x = 1,931,432.84
  5. Step 5: Solve for x
    x = 1,931,432.84/1,402.17
  6. Step 6: Final answer
    x = 1,377.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.