Home / 10,510.40-15,766.32-2,720

Finding the Fourth Proportional to 10,510.40, 15,766.32 and 2,720

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Solution

The fourth proportional to 10,510.40, 15,766.32 and 2,720 is: 4,080.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,510.40 : 15,766.32 = 2,720 : x
  2. Step 2: Convert to fraction form
    10,510.40/15,766.32 = 2,720/x
  3. Step 3: Cross multiply
    10,510.40x = 15,766.32 × 2,720
  4. Step 4: Simplify right side
    10,510.40x = 42,884,390.40
  5. Step 5: Solve for x
    x = 42,884,390.40/10,510.40
  6. Step 6: Final answer
    x = 4,080.19

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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.