Home / 4,257.40-6,386.14-1,179.40

Finding the Fourth Proportional to 4,257.40, 6,386.14 and 1,179.40

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Solution

The fourth proportional to 4,257.40, 6,386.14 and 1,179.40 is: 1,769.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,257.40 : 6,386.14 = 1,179.40 : x
  2. Step 2: Convert to fraction form
    4,257.40/6,386.14 = 1,179.40/x
  3. Step 3: Cross multiply
    4,257.40x = 6,386.14 × 1,179.40
  4. Step 4: Simplify right side
    4,257.40x = 7,531,813.52
  5. Step 5: Solve for x
    x = 7,531,813.52/4,257.40
  6. Step 6: Final answer
    x = 1,769.11

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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.