Home / 5,105.12-7,043.52-2,866.76

Finding the Fourth Proportional to 5,105.12, 7,043.52 and 2,866.76

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Solution

The fourth proportional to 5,105.12, 7,043.52 and 2,866.76 is: 3,955.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.12 : 7,043.52 = 2,866.76 : x
  2. Step 2: Convert to fraction form
    5,105.12/7,043.52 = 2,866.76/x
  3. Step 3: Cross multiply
    5,105.12x = 7,043.52 × 2,866.76
  4. Step 4: Simplify right side
    5,105.12x = 20,192,081.40
  5. Step 5: Solve for x
    x = 20,192,081.40/5,105.12
  6. Step 6: Final answer
    x = 3,955.26

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Find fourth proportional to 2,552.56, 3,521.76 and 1,433.38
Half scale
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Double scale
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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.