Home / 7,943.28-10,948.98-5,390.22

Finding the Fourth Proportional to 7,943.28, 10,948.98 and 5,390.22

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Solution

The fourth proportional to 7,943.28, 10,948.98 and 5,390.22 is: 7,429.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943.28 : 10,948.98 = 5,390.22 : x
  2. Step 2: Convert to fraction form
    7,943.28/10,948.98 = 5,390.22/x
  3. Step 3: Cross multiply
    7,943.28x = 10,948.98 × 5,390.22
  4. Step 4: Simplify right side
    7,943.28x = 59,017,410.98
  5. Step 5: Solve for x
    x = 59,017,410.98/7,943.28
  6. Step 6: Final answer
    x = 7,429.85

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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.