Home / 8,378.79-12,551.43-5,045.19

Finding the Fourth Proportional to 8,378.79, 12,551.43 and 5,045.19

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Solution

The fourth proportional to 8,378.79, 12,551.43 and 5,045.19 is: 7,557.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,378.79 : 12,551.43 = 5,045.19 : x
  2. Step 2: Convert to fraction form
    8,378.79/12,551.43 = 5,045.19/x
  3. Step 3: Cross multiply
    8,378.79x = 12,551.43 × 5,045.19
  4. Step 4: Simplify right side
    8,378.79x = 63,324,349.12
  5. Step 5: Solve for x
    x = 63,324,349.12/8,378.79
  6. Step 6: Final answer
    x = 7,557.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.