Home / 7,390.16-11,049.60-7,215.20

Finding the Fourth Proportional to 7,390.16, 11,049.60 and 7,215.20

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Solution

The fourth proportional to 7,390.16, 11,049.60 and 7,215.20 is: 10,788.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,390.16 : 11,049.60 = 7,215.20 : x
  2. Step 2: Convert to fraction form
    7,390.16/11,049.60 = 7,215.20/x
  3. Step 3: Cross multiply
    7,390.16x = 11,049.60 × 7,215.20
  4. Step 4: Simplify right side
    7,390.16x = 79,725,073.92
  5. Step 5: Solve for x
    x = 79,725,073.92/7,390.16
  6. Step 6: Final answer
    x = 10,788.00

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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.