Home / 4,309.32-6,464.40-1,387.08

Finding the Fourth Proportional to 4,309.32, 6,464.40 and 1,387.08

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Solution

The fourth proportional to 4,309.32, 6,464.40 and 1,387.08 is: 2,080.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,309.32 : 6,464.40 = 1,387.08 : x
  2. Step 2: Convert to fraction form
    4,309.32/6,464.40 = 1,387.08/x
  3. Step 3: Cross multiply
    4,309.32x = 6,464.40 × 1,387.08
  4. Step 4: Simplify right side
    4,309.32x = 8,966,639.95
  5. Step 5: Solve for x
    x = 8,966,639.95/4,309.32
  6. Step 6: Final answer
    x = 2,080.76

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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.