Home / 2,538.68-3,516.95-2,478.20

Finding the Fourth Proportional to 2,538.68, 3,516.95 and 2,478.20

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Solution

The fourth proportional to 2,538.68, 3,516.95 and 2,478.20 is: 3,433.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,538.68 : 3,516.95 = 2,478.20 : x
  2. Step 2: Convert to fraction form
    2,538.68/3,516.95 = 2,478.20/x
  3. Step 3: Cross multiply
    2,538.68x = 3,516.95 × 2,478.20
  4. Step 4: Simplify right side
    2,538.68x = 8,715,705.49
  5. Step 5: Solve for x
    x = 8,715,705.49/2,538.68
  6. Step 6: Final answer
    x = 3,433.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.