Home / 3,508.47-5,263.11-1,287.45

Finding the Fourth Proportional to 3,508.47, 5,263.11 and 1,287.45

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Solution

The fourth proportional to 3,508.47, 5,263.11 and 1,287.45 is: 1,931.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,508.47 : 5,263.11 = 1,287.45 : x
  2. Step 2: Convert to fraction form
    3,508.47/5,263.11 = 1,287.45/x
  3. Step 3: Cross multiply
    3,508.47x = 5,263.11 × 1,287.45
  4. Step 4: Simplify right side
    3,508.47x = 6,775,990.97
  5. Step 5: Solve for x
    x = 6,775,990.97/3,508.47
  6. Step 6: Final answer
    x = 1,931.32

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1.5x scale

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.