Home / 9,288.99-12,819.12-6,642.72

Finding the Fourth Proportional to 9,288.99, 12,819.12 and 6,642.72

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Solution

The fourth proportional to 9,288.99, 12,819.12 and 6,642.72 is: 9,167.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,288.99 : 12,819.12 = 6,642.72 : x
  2. Step 2: Convert to fraction form
    9,288.99/12,819.12 = 6,642.72/x
  3. Step 3: Cross multiply
    9,288.99x = 12,819.12 × 6,642.72
  4. Step 4: Simplify right side
    9,288.99x = 85,153,824.81
  5. Step 5: Solve for x
    x = 85,153,824.81/9,288.99
  6. Step 6: Final answer
    x = 9,167.18

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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.