Home / 7,118.40-9,822.24-3,974.52

Finding the Fourth Proportional to 7,118.40, 9,822.24 and 3,974.52

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Solution

The fourth proportional to 7,118.40, 9,822.24 and 3,974.52 is: 5,484.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,118.40 : 9,822.24 = 3,974.52 : x
  2. Step 2: Convert to fraction form
    7,118.40/9,822.24 = 3,974.52/x
  3. Step 3: Cross multiply
    7,118.40x = 9,822.24 × 3,974.52
  4. Step 4: Simplify right side
    7,118.40x = 39,038,689.32
  5. Step 5: Solve for x
    x = 39,038,689.32/7,118.40
  6. Step 6: Final answer
    x = 5,484.19

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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.