Home / 10,287.04-15,428.96-2,890.72

Finding the Fourth Proportional to 10,287.04, 15,428.96 and 2,890.72

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Solution

The fourth proportional to 10,287.04, 15,428.96 and 2,890.72 is: 4,335.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,287.04 : 15,428.96 = 2,890.72 : x
  2. Step 2: Convert to fraction form
    10,287.04/15,428.96 = 2,890.72/x
  3. Step 3: Cross multiply
    10,287.04x = 15,428.96 × 2,890.72
  4. Step 4: Simplify right side
    10,287.04x = 44,600,803.25
  5. Step 5: Solve for x
    x = 44,600,803.25/10,287.04
  6. Step 6: Final answer
    x = 4,335.63

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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.