Home / 10,385.30-15,575.06-2,987.76

Finding the Fourth Proportional to 10,385.30, 15,575.06 and 2,987.76

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Solution

The fourth proportional to 10,385.30, 15,575.06 and 2,987.76 is: 4,480.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,385.30 : 15,575.06 = 2,987.76 : x
  2. Step 2: Convert to fraction form
    10,385.30/15,575.06 = 2,987.76/x
  3. Step 3: Cross multiply
    10,385.30x = 15,575.06 × 2,987.76
  4. Step 4: Simplify right side
    10,385.30x = 46,534,541.27
  5. Step 5: Solve for x
    x = 46,534,541.27/10,385.30
  6. Step 6: Final answer
    x = 4,480.81

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1.5x scale

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.