Home / 8,478.38-11,700.30-4,701.70

Finding the Fourth Proportional to 8,478.38, 11,700.30 and 4,701.70

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Solution

The fourth proportional to 8,478.38, 11,700.30 and 4,701.70 is: 6,488.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478.38 : 11,700.30 = 4,701.70 : x
  2. Step 2: Convert to fraction form
    8,478.38/11,700.30 = 4,701.70/x
  3. Step 3: Cross multiply
    8,478.38x = 11,700.30 × 4,701.70
  4. Step 4: Simplify right side
    8,478.38x = 55,011,315.14
  5. Step 5: Solve for x
    x = 55,011,315.14/8,478.38
  6. Step 6: Final answer
    x = 6,488.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.