Home / 9,122.40-12,588.89-4,930.65

Finding the Fourth Proportional to 9,122.40, 12,588.89 and 4,930.65

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Solution

The fourth proportional to 9,122.40, 12,588.89 and 4,930.65 is: 6,804.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,122.40 : 12,588.89 = 4,930.65 : x
  2. Step 2: Convert to fraction form
    9,122.40/12,588.89 = 4,930.65/x
  3. Step 3: Cross multiply
    9,122.40x = 12,588.89 × 4,930.65
  4. Step 4: Simplify right side
    9,122.40x = 62,071,385.83
  5. Step 5: Solve for x
    x = 62,071,385.83/9,122.40
  6. Step 6: Final answer
    x = 6,804.28

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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.