Home / 8,445.30-12,667.95-5,164.80

Finding the Fourth Proportional to 8,445.30, 12,667.95 and 5,164.80

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Solution

The fourth proportional to 8,445.30, 12,667.95 and 5,164.80 is: 7,747.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,445.30 : 12,667.95 = 5,164.80 : x
  2. Step 2: Convert to fraction form
    8,445.30/12,667.95 = 5,164.80/x
  3. Step 3: Cross multiply
    8,445.30x = 12,667.95 × 5,164.80
  4. Step 4: Simplify right side
    8,445.30x = 65,427,428.16
  5. Step 5: Solve for x
    x = 65,427,428.16/8,445.30
  6. Step 6: Final answer
    x = 7,747.20

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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.