Home / 7,117.03-9,821.14-3,972.61

Finding the Fourth Proportional to 7,117.03, 9,821.14 and 3,972.61

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Solution

The fourth proportional to 7,117.03, 9,821.14 and 3,972.61 is: 5,482.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,117.03 : 9,821.14 = 3,972.61 : x
  2. Step 2: Convert to fraction form
    7,117.03/9,821.14 = 3,972.61/x
  3. Step 3: Cross multiply
    7,117.03x = 9,821.14 × 3,972.61
  4. Step 4: Simplify right side
    7,117.03x = 39,015,558.98
  5. Step 5: Solve for x
    x = 39,015,558.98/7,117.03
  6. Step 6: Final answer
    x = 5,482.00

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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.