Home / 7,340.90-10,130.36-3,983.78

Finding the Fourth Proportional to 7,340.90, 10,130.36 and 3,983.78

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Solution

The fourth proportional to 7,340.90, 10,130.36 and 3,983.78 is: 5,497.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,340.90 : 10,130.36 = 3,983.78 : x
  2. Step 2: Convert to fraction form
    7,340.90/10,130.36 = 3,983.78/x
  3. Step 3: Cross multiply
    7,340.90x = 10,130.36 × 3,983.78
  4. Step 4: Simplify right side
    7,340.90x = 40,357,130.97
  5. Step 5: Solve for x
    x = 40,357,130.97/7,340.90
  6. Step 6: Final answer
    x = 5,497.58

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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.