Home / 9,347.40-12,899.30-5,155.56

Finding the Fourth Proportional to 9,347.40, 12,899.30 and 5,155.56

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Solution

The fourth proportional to 9,347.40, 12,899.30 and 5,155.56 is: 7,114.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,347.40 : 12,899.30 = 5,155.56 : x
  2. Step 2: Convert to fraction form
    9,347.40/12,899.30 = 5,155.56/x
  3. Step 3: Cross multiply
    9,347.40x = 12,899.30 × 5,155.56
  4. Step 4: Simplify right side
    9,347.40x = 66,503,115.11
  5. Step 5: Solve for x
    x = 66,503,115.11/9,347.40
  6. Step 6: Final answer
    x = 7,114.61

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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.