Home / 10,487.30-15,730.60-3,091.88

Finding the Fourth Proportional to 10,487.30, 15,730.60 and 3,091.88

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Solution

The fourth proportional to 10,487.30, 15,730.60 and 3,091.88 is: 4,637.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,487.30 : 15,730.60 = 3,091.88 : x
  2. Step 2: Convert to fraction form
    10,487.30/15,730.60 = 3,091.88/x
  3. Step 3: Cross multiply
    10,487.30x = 15,730.60 × 3,091.88
  4. Step 4: Simplify right side
    10,487.30x = 48,637,127.53
  5. Step 5: Solve for x
    x = 48,637,127.53/10,487.30
  6. Step 6: Final answer
    x = 4,637.72

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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.