Home / 7,239.12-9,990.18-4,052.32

Finding the Fourth Proportional to 7,239.12, 9,990.18 and 4,052.32

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Solution

The fourth proportional to 7,239.12, 9,990.18 and 4,052.32 is: 5,592.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,239.12 : 9,990.18 = 4,052.32 : x
  2. Step 2: Convert to fraction form
    7,239.12/9,990.18 = 4,052.32/x
  3. Step 3: Cross multiply
    7,239.12x = 9,990.18 × 4,052.32
  4. Step 4: Simplify right side
    7,239.12x = 40,483,406.22
  5. Step 5: Solve for x
    x = 40,483,406.22/7,239.12
  6. Step 6: Final answer
    x = 5,592.31

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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.