Home / 2,985.92-4,478.98-1,426.10

Finding the Fourth Proportional to 2,985.92, 4,478.98 and 1,426.10

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Solution

The fourth proportional to 2,985.92, 4,478.98 and 1,426.10 is: 2,139.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.92 : 4,478.98 = 1,426.10 : x
  2. Step 2: Convert to fraction form
    2,985.92/4,478.98 = 1,426.10/x
  3. Step 3: Cross multiply
    2,985.92x = 4,478.98 × 1,426.10
  4. Step 4: Simplify right side
    2,985.92x = 6,387,473.38
  5. Step 5: Solve for x
    x = 6,387,473.38/2,985.92
  6. Step 6: Final answer
    x = 2,139.20

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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.