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Finding the Fourth Proportional to 4,711.12, 7,068.12 and 2,759.20

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Solution

The fourth proportional to 4,711.12, 7,068.12 and 2,759.20 is: 4,139.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,711.12 : 7,068.12 = 2,759.20 : x
  2. Step 2: Convert to fraction form
    4,711.12/7,068.12 = 2,759.20/x
  3. Step 3: Cross multiply
    4,711.12x = 7,068.12 × 2,759.20
  4. Step 4: Simplify right side
    4,711.12x = 19,502,356.70
  5. Step 5: Solve for x
    x = 19,502,356.70/4,711.12
  6. Step 6: Final answer
    x = 4,139.64

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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.