Home / 4,209.76-6,315-1,611.28

Finding the Fourth Proportional to 4,209.76, 6,315 and 1,611.28

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Solution

The fourth proportional to 4,209.76, 6,315 and 1,611.28 is: 2,417.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,209.76 : 6,315 = 1,611.28 : x
  2. Step 2: Convert to fraction form
    4,209.76/6,315 = 1,611.28/x
  3. Step 3: Cross multiply
    4,209.76x = 6,315 × 1,611.28
  4. Step 4: Simplify right side
    4,209.76x = 10,175,233.20
  5. Step 5: Solve for x
    x = 10,175,233.20/4,209.76
  6. Step 6: Final answer
    x = 2,417.06

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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.