Home / 3,913.76-5,400.56-2,235.16

Finding the Fourth Proportional to 3,913.76, 5,400.56 and 2,235.16

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Solution

The fourth proportional to 3,913.76, 5,400.56 and 2,235.16 is: 3,084.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.76 : 5,400.56 = 2,235.16 : x
  2. Step 2: Convert to fraction form
    3,913.76/5,400.56 = 2,235.16/x
  3. Step 3: Cross multiply
    3,913.76x = 5,400.56 × 2,235.16
  4. Step 4: Simplify right side
    3,913.76x = 12,071,115.69
  5. Step 5: Solve for x
    x = 12,071,115.69/3,913.76
  6. Step 6: Final answer
    x = 3,084.28

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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.