Home / 4,209.17-6,314.76-1,287.50

Finding the Fourth Proportional to 4,209.17, 6,314.76 and 1,287.50

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Solution

The fourth proportional to 4,209.17, 6,314.76 and 1,287.50 is: 1,931.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,209.17 : 6,314.76 = 1,287.50 : x
  2. Step 2: Convert to fraction form
    4,209.17/6,314.76 = 1,287.50/x
  3. Step 3: Cross multiply
    4,209.17x = 6,314.76 × 1,287.50
  4. Step 4: Simplify right side
    4,209.17x = 8,130,221.93
  5. Step 5: Solve for x
    x = 8,130,221.93/4,209.17
  6. Step 6: Final answer
    x = 1,931.55

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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.