Home / 5,158.26-7,118.42-2,800.40

Finding the Fourth Proportional to 5,158.26, 7,118.42 and 2,800.40

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Solution

The fourth proportional to 5,158.26, 7,118.42 and 2,800.40 is: 3,864.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,158.26 : 7,118.42 = 2,800.40 : x
  2. Step 2: Convert to fraction form
    5,158.26/7,118.42 = 2,800.40/x
  3. Step 3: Cross multiply
    5,158.26x = 7,118.42 × 2,800.40
  4. Step 4: Simplify right side
    5,158.26x = 19,934,373.77
  5. Step 5: Solve for x
    x = 19,934,373.77/5,158.26
  6. Step 6: Final answer
    x = 3,864.55

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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.