Home / 1,487.19-2,229.95-609.45

Finding the Fourth Proportional to 1,487.19, 2,229.95 and 609.45

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Solution

The fourth proportional to 1,487.19, 2,229.95 and 609.45 is: 913.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.19 : 2,229.95 = 609.45 : x
  2. Step 2: Convert to fraction form
    1,487.19/2,229.95 = 609.45/x
  3. Step 3: Cross multiply
    1,487.19x = 2,229.95 × 609.45
  4. Step 4: Simplify right side
    1,487.19x = 1,359,043.03
  5. Step 5: Solve for x
    x = 1,359,043.03/1,487.19
  6. Step 6: Final answer
    x = 913.83

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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.