Home / 7,155.18-10,731.51-1,959.66

Finding the Fourth Proportional to 7,155.18, 10,731.51 and 1,959.66

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Solution

The fourth proportional to 7,155.18, 10,731.51 and 1,959.66 is: 2,939.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,155.18 : 10,731.51 = 1,959.66 : x
  2. Step 2: Convert to fraction form
    7,155.18/10,731.51 = 1,959.66/x
  3. Step 3: Cross multiply
    7,155.18x = 10,731.51 × 1,959.66
  4. Step 4: Simplify right side
    7,155.18x = 21,030,110.89
  5. Step 5: Solve for x
    x = 21,030,110.89/7,155.18
  6. Step 6: Final answer
    x = 2,939.14

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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.