Home / 8,871.12-13,307.90-2,631.56

Finding the Fourth Proportional to 8,871.12, 13,307.90 and 2,631.56

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Solution

The fourth proportional to 8,871.12, 13,307.90 and 2,631.56 is: 3,947.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,871.12 : 13,307.90 = 2,631.56 : x
  2. Step 2: Convert to fraction form
    8,871.12/13,307.90 = 2,631.56/x
  3. Step 3: Cross multiply
    8,871.12x = 13,307.90 × 2,631.56
  4. Step 4: Simplify right side
    8,871.12x = 35,020,457.63
  5. Step 5: Solve for x
    x = 35,020,457.63/8,871.12
  6. Step 6: Final answer
    x = 3,947.69

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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.