Home / 7,129.21-10,689.71-2,746.10

Finding the Fourth Proportional to 7,129.21, 10,689.71 and 2,746.10

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Solution

The fourth proportional to 7,129.21, 10,689.71 and 2,746.10 is: 4,117.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129.21 : 10,689.71 = 2,746.10 : x
  2. Step 2: Convert to fraction form
    7,129.21/10,689.71 = 2,746.10/x
  3. Step 3: Cross multiply
    7,129.21x = 10,689.71 × 2,746.10
  4. Step 4: Simplify right side
    7,129.21x = 29,354,959.18
  5. Step 5: Solve for x
    x = 29,354,959.18/7,129.21
  6. Step 6: Final answer
    x = 4,117.56

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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.