Home / 7,079.10-10,618.67-2,148.78

Finding the Fourth Proportional to 7,079.10, 10,618.67 and 2,148.78

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Solution

The fourth proportional to 7,079.10, 10,618.67 and 2,148.78 is: 3,223.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,079.10 : 10,618.67 = 2,148.78 : x
  2. Step 2: Convert to fraction form
    7,079.10/10,618.67 = 2,148.78/x
  3. Step 3: Cross multiply
    7,079.10x = 10,618.67 × 2,148.78
  4. Step 4: Simplify right side
    7,079.10x = 22,817,185.72
  5. Step 5: Solve for x
    x = 22,817,185.72/7,079.10
  6. Step 6: Final answer
    x = 3,223.18

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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.