Home / 8,040.42-12,065.76-4,345.20

Finding the Fourth Proportional to 8,040.42, 12,065.76 and 4,345.20

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Solution

The fourth proportional to 8,040.42, 12,065.76 and 4,345.20 is: 6,520.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,040.42 : 12,065.76 = 4,345.20 : x
  2. Step 2: Convert to fraction form
    8,040.42/12,065.76 = 4,345.20/x
  3. Step 3: Cross multiply
    8,040.42x = 12,065.76 × 4,345.20
  4. Step 4: Simplify right side
    8,040.42x = 52,428,140.35
  5. Step 5: Solve for x
    x = 52,428,140.35/8,040.42
  6. Step 6: Final answer
    x = 6,520.57

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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.