Home / 5,281.20-7,939.80-4,314.32

Finding the Fourth Proportional to 5,281.20, 7,939.80 and 4,314.32

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Solution

The fourth proportional to 5,281.20, 7,939.80 and 4,314.32 is: 6,486.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,281.20 : 7,939.80 = 4,314.32 : x
  2. Step 2: Convert to fraction form
    5,281.20/7,939.80 = 4,314.32/x
  3. Step 3: Cross multiply
    5,281.20x = 7,939.80 × 4,314.32
  4. Step 4: Simplify right side
    5,281.20x = 34,254,837.94
  5. Step 5: Solve for x
    x = 34,254,837.94/5,281.20
  6. Step 6: Final answer
    x = 6,486.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.