Home / 7,528.16-11,288.12-5,978.12

Finding the Fourth Proportional to 7,528.16, 11,288.12 and 5,978.12

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Solution

The fourth proportional to 7,528.16, 11,288.12 and 5,978.12 is: 8,963.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,528.16 : 11,288.12 = 5,978.12 : x
  2. Step 2: Convert to fraction form
    7,528.16/11,288.12 = 5,978.12/x
  3. Step 3: Cross multiply
    7,528.16x = 11,288.12 × 5,978.12
  4. Step 4: Simplify right side
    7,528.16x = 67,481,649.60
  5. Step 5: Solve for x
    x = 67,481,649.60/7,528.16
  6. Step 6: Final answer
    x = 8,963.90

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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.