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Finding the Fourth Proportional to 9,903.78, 14,862.96 and 4,709.70

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Solution

The fourth proportional to 9,903.78, 14,862.96 and 4,709.70 is: 7,068.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,903.78 : 14,862.96 = 4,709.70 : x
  2. Step 2: Convert to fraction form
    9,903.78/14,862.96 = 4,709.70/x
  3. Step 3: Cross multiply
    9,903.78x = 14,862.96 × 4,709.70
  4. Step 4: Simplify right side
    9,903.78x = 70,000,082.71
  5. Step 5: Solve for x
    x = 70,000,082.71/9,903.78
  6. Step 6: Final answer
    x = 7,068.02

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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.