Home / 7,990.12-11,017.72-5,599.32

Finding the Fourth Proportional to 7,990.12, 11,017.72 and 5,599.32

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Solution

The fourth proportional to 7,990.12, 11,017.72 and 5,599.32 is: 7,721.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.12 : 11,017.72 = 5,599.32 : x
  2. Step 2: Convert to fraction form
    7,990.12/11,017.72 = 5,599.32/x
  3. Step 3: Cross multiply
    7,990.12x = 11,017.72 × 5,599.32
  4. Step 4: Simplify right side
    7,990.12x = 61,691,739.95
  5. Step 5: Solve for x
    x = 61,691,739.95/7,990.12
  6. Step 6: Final answer
    x = 7,721.00

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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.