Home / 4,678.56-6,454.62-2,688.12

Finding the Fourth Proportional to 4,678.56, 6,454.62 and 2,688.12

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Solution

The fourth proportional to 4,678.56, 6,454.62 and 2,688.12 is: 3,708.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,678.56 : 6,454.62 = 2,688.12 : x
  2. Step 2: Convert to fraction form
    4,678.56/6,454.62 = 2,688.12/x
  3. Step 3: Cross multiply
    4,678.56x = 6,454.62 × 2,688.12
  4. Step 4: Simplify right side
    4,678.56x = 17,350,793.11
  5. Step 5: Solve for x
    x = 17,350,793.11/4,678.56
  6. Step 6: Final answer
    x = 3,708.58

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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.