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Finding the Fourth Proportional to 7,308.80, 10,907.14 and 5,656.40

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Solution

The fourth proportional to 7,308.80, 10,907.14 and 5,656.40 is: 8,441.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,308.80 : 10,907.14 = 5,656.40 : x
  2. Step 2: Convert to fraction form
    7,308.80/10,907.14 = 5,656.40/x
  3. Step 3: Cross multiply
    7,308.80x = 10,907.14 × 5,656.40
  4. Step 4: Simplify right side
    7,308.80x = 61,695,146.70
  5. Step 5: Solve for x
    x = 61,695,146.70/7,308.80
  6. Step 6: Final answer
    x = 8,441.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.