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Finding the Fourth Proportional to 4,985.38, 7,478.08 and 1,475.12

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Solution

The fourth proportional to 4,985.38, 7,478.08 and 1,475.12 is: 2,212.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.38 : 7,478.08 = 1,475.12 : x
  2. Step 2: Convert to fraction form
    4,985.38/7,478.08 = 1,475.12/x
  3. Step 3: Cross multiply
    4,985.38x = 7,478.08 × 1,475.12
  4. Step 4: Simplify right side
    4,985.38x = 11,031,039.30
  5. Step 5: Solve for x
    x = 11,031,039.30/4,985.38
  6. Step 6: Final answer
    x = 2,212.68

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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.