Home / 9,079.40-12,529.18-5,302.78

Finding the Fourth Proportional to 9,079.40, 12,529.18 and 5,302.78

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Solution

The fourth proportional to 9,079.40, 12,529.18 and 5,302.78 is: 7,317.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,079.40 : 12,529.18 = 5,302.78 : x
  2. Step 2: Convert to fraction form
    9,079.40/12,529.18 = 5,302.78/x
  3. Step 3: Cross multiply
    9,079.40x = 12,529.18 × 5,302.78
  4. Step 4: Simplify right side
    9,079.40x = 66,439,485.12
  5. Step 5: Solve for x
    x = 66,439,485.12/9,079.40
  6. Step 6: Final answer
    x = 7,317.61

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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.