Home / 9,291.11-12,821.92-5,312.59

Finding the Fourth Proportional to 9,291.11, 12,821.92 and 5,312.59

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Solution

The fourth proportional to 9,291.11, 12,821.92 and 5,312.59 is: 7,331.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,291.11 : 12,821.92 = 5,312.59 : x
  2. Step 2: Convert to fraction form
    9,291.11/12,821.92 = 5,312.59/x
  3. Step 3: Cross multiply
    9,291.11x = 12,821.92 × 5,312.59
  4. Step 4: Simplify right side
    9,291.11x = 68,117,558.64
  5. Step 5: Solve for x
    x = 68,117,558.64/9,291.11
  6. Step 6: Final answer
    x = 7,331.48

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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.