Home / 4,209.53-6,312.05-1,287.05

Finding the Fourth Proportional to 4,209.53, 6,312.05 and 1,287.05

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Solution

The fourth proportional to 4,209.53, 6,312.05 and 1,287.05 is: 1,929.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,209.53 : 6,312.05 = 1,287.05 : x
  2. Step 2: Convert to fraction form
    4,209.53/6,312.05 = 1,287.05/x
  3. Step 3: Cross multiply
    4,209.53x = 6,312.05 × 1,287.05
  4. Step 4: Simplify right side
    4,209.53x = 8,123,885.96
  5. Step 5: Solve for x
    x = 8,123,885.96/4,209.53
  6. Step 6: Final answer
    x = 1,929.88

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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.