Home / 9,113.20-12,576.08-5,134.40

Finding the Fourth Proportional to 9,113.20, 12,576.08 and 5,134.40

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Solution

The fourth proportional to 9,113.20, 12,576.08 and 5,134.40 is: 7,085.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,113.20 : 12,576.08 = 5,134.40 : x
  2. Step 2: Convert to fraction form
    9,113.20/12,576.08 = 5,134.40/x
  3. Step 3: Cross multiply
    9,113.20x = 12,576.08 × 5,134.40
  4. Step 4: Simplify right side
    9,113.20x = 64,570,625.15
  5. Step 5: Solve for x
    x = 64,570,625.15/9,113.20
  6. Step 6: Final answer
    x = 7,085.40

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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.