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Finding the Fourth Proportional to 7,778.60, 10,730.60 and 5,125.04

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Solution

The fourth proportional to 7,778.60, 10,730.60 and 5,125.04 is: 7,070.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,778.60 : 10,730.60 = 5,125.04 : x
  2. Step 2: Convert to fraction form
    7,778.60/10,730.60 = 5,125.04/x
  3. Step 3: Cross multiply
    7,778.60x = 10,730.60 × 5,125.04
  4. Step 4: Simplify right side
    7,778.60x = 54,994,754.22
  5. Step 5: Solve for x
    x = 54,994,754.22/7,778.60
  6. Step 6: Final answer
    x = 7,070.01

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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.