Home / 5,378.31-8,065.71-1,679.58

Finding the Fourth Proportional to 5,378.31, 8,065.71 and 1,679.58

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Solution

The fourth proportional to 5,378.31, 8,065.71 and 1,679.58 is: 2,518.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.31 : 8,065.71 = 1,679.58 : x
  2. Step 2: Convert to fraction form
    5,378.31/8,065.71 = 1,679.58/x
  3. Step 3: Cross multiply
    5,378.31x = 8,065.71 × 1,679.58
  4. Step 4: Simplify right side
    5,378.31x = 13,547,005.20
  5. Step 5: Solve for x
    x = 13,547,005.20/5,378.31
  6. Step 6: Final answer
    x = 2,518.82

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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.