Home / 4,178.68-6,268.18-1,257.40

Finding the Fourth Proportional to 4,178.68, 6,268.18 and 1,257.40

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Solution

The fourth proportional to 4,178.68, 6,268.18 and 1,257.40 is: 1,886.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,178.68 : 6,268.18 = 1,257.40 : x
  2. Step 2: Convert to fraction form
    4,178.68/6,268.18 = 1,257.40/x
  3. Step 3: Cross multiply
    4,178.68x = 6,268.18 × 1,257.40
  4. Step 4: Simplify right side
    4,178.68x = 7,881,609.53
  5. Step 5: Solve for x
    x = 7,881,609.53/4,178.68
  6. Step 6: Final answer
    x = 1,886.15

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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.