Home / 9,876.40-14,815.49-2,856.31

Finding the Fourth Proportional to 9,876.40, 14,815.49 and 2,856.31

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Solution

The fourth proportional to 9,876.40, 14,815.49 and 2,856.31 is: 4,284.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,876.40 : 14,815.49 = 2,856.31 : x
  2. Step 2: Convert to fraction form
    9,876.40/14,815.49 = 2,856.31/x
  3. Step 3: Cross multiply
    9,876.40x = 14,815.49 × 2,856.31
  4. Step 4: Simplify right side
    9,876.40x = 42,317,632.24
  5. Step 5: Solve for x
    x = 42,317,632.24/9,876.40
  6. Step 6: Final answer
    x = 4,284.72

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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.