Home / 6,612.90-9,124.29-3,779.79

Finding the Fourth Proportional to 6,612.90, 9,124.29 and 3,779.79

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Solution

The fourth proportional to 6,612.90, 9,124.29 and 3,779.79 is: 5,215.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,612.90 : 9,124.29 = 3,779.79 : x
  2. Step 2: Convert to fraction form
    6,612.90/9,124.29 = 3,779.79/x
  3. Step 3: Cross multiply
    6,612.90x = 9,124.29 × 3,779.79
  4. Step 4: Simplify right side
    6,612.90x = 34,487,900.10
  5. Step 5: Solve for x
    x = 34,487,900.10/6,612.90
  6. Step 6: Final answer
    x = 5,215.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.