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Finding the Fourth Proportional to 7,611.12, 10,500.80 and 4,465.12

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Solution

The fourth proportional to 7,611.12, 10,500.80 and 4,465.12 is: 6,160.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,611.12 : 10,500.80 = 4,465.12 : x
  2. Step 2: Convert to fraction form
    7,611.12/10,500.80 = 4,465.12/x
  3. Step 3: Cross multiply
    7,611.12x = 10,500.80 × 4,465.12
  4. Step 4: Simplify right side
    7,611.12x = 46,887,332.10
  5. Step 5: Solve for x
    x = 46,887,332.10/7,611.12
  6. Step 6: Final answer
    x = 6,160.37

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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.