Home / 1,479.04-2,216.64-709.12

Finding the Fourth Proportional to 1,479.04, 2,216.64 and 709.12

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Solution

The fourth proportional to 1,479.04, 2,216.64 and 709.12 is: 1,062.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,479.04 : 2,216.64 = 709.12 : x
  2. Step 2: Convert to fraction form
    1,479.04/2,216.64 = 709.12/x
  3. Step 3: Cross multiply
    1,479.04x = 2,216.64 × 709.12
  4. Step 4: Simplify right side
    1,479.04x = 1,571,863.76
  5. Step 5: Solve for x
    x = 1,571,863.76/1,479.04
  6. Step 6: Final answer
    x = 1,062.76

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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.