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Finding the Fourth Proportional to 7,627.80, 10,520.93 and 7,000.35

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Solution

The fourth proportional to 7,627.80, 10,520.93 and 7,000.35 is: 9,655.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,627.80 : 10,520.93 = 7,000.35 : x
  2. Step 2: Convert to fraction form
    7,627.80/10,520.93 = 7,000.35/x
  3. Step 3: Cross multiply
    7,627.80x = 10,520.93 × 7,000.35
  4. Step 4: Simplify right side
    7,627.80x = 73,650,157.32
  5. Step 5: Solve for x
    x = 73,650,157.32/7,627.80
  6. Step 6: Final answer
    x = 9,655.49

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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.