Home / 8,992.60-12,368.66-7,220.36

Finding the Fourth Proportional to 8,992.60, 12,368.66 and 7,220.36

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Solution

The fourth proportional to 8,992.60, 12,368.66 and 7,220.36 is: 9,931.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,992.60 : 12,368.66 = 7,220.36 : x
  2. Step 2: Convert to fraction form
    8,992.60/12,368.66 = 7,220.36/x
  3. Step 3: Cross multiply
    8,992.60x = 12,368.66 × 7,220.36
  4. Step 4: Simplify right side
    8,992.60x = 89,306,177.92
  5. Step 5: Solve for x
    x = 89,306,177.92/8,992.60
  6. Step 6: Final answer
    x = 9,931.07

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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.