Home / 5,151.38-7,106.16-3,135.40

Finding the Fourth Proportional to 5,151.38, 7,106.16 and 3,135.40

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Solution

The fourth proportional to 5,151.38, 7,106.16 and 3,135.40 is: 4,325.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,151.38 : 7,106.16 = 3,135.40 : x
  2. Step 2: Convert to fraction form
    5,151.38/7,106.16 = 3,135.40/x
  3. Step 3: Cross multiply
    5,151.38x = 7,106.16 × 3,135.40
  4. Step 4: Simplify right side
    5,151.38x = 22,280,648.06
  5. Step 5: Solve for x
    x = 22,280,648.06/5,151.38
  6. Step 6: Final answer
    x = 4,325.18

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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.