Home / 8,320.08-11,479.24-5,330.64

Finding the Fourth Proportional to 8,320.08, 11,479.24 and 5,330.64

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Solution

The fourth proportional to 8,320.08, 11,479.24 and 5,330.64 is: 7,354.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.08 : 11,479.24 = 5,330.64 : x
  2. Step 2: Convert to fraction form
    8,320.08/11,479.24 = 5,330.64/x
  3. Step 3: Cross multiply
    8,320.08x = 11,479.24 × 5,330.64
  4. Step 4: Simplify right side
    8,320.08x = 61,191,695.91
  5. Step 5: Solve for x
    x = 61,191,695.91/8,320.08
  6. Step 6: Final answer
    x = 7,354.70

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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.