Home / 8,215.60-11,332.08-5,235.13

Finding the Fourth Proportional to 8,215.60, 11,332.08 and 5,235.13

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Solution

The fourth proportional to 8,215.60, 11,332.08 and 5,235.13 is: 7,221.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215.60 : 11,332.08 = 5,235.13 : x
  2. Step 2: Convert to fraction form
    8,215.60/11,332.08 = 5,235.13/x
  3. Step 3: Cross multiply
    8,215.60x = 11,332.08 × 5,235.13
  4. Step 4: Simplify right side
    8,215.60x = 59,324,911.41
  5. Step 5: Solve for x
    x = 59,324,911.41/8,215.60
  6. Step 6: Final answer
    x = 7,221.01

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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.