Home / 5,220.12-7,831.54-2,587.52

Finding the Fourth Proportional to 5,220.12, 7,831.54 and 2,587.52

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Solution

The fourth proportional to 5,220.12, 7,831.54 and 2,587.52 is: 3,881.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220.12 : 7,831.54 = 2,587.52 : x
  2. Step 2: Convert to fraction form
    5,220.12/7,831.54 = 2,587.52/x
  3. Step 3: Cross multiply
    5,220.12x = 7,831.54 × 2,587.52
  4. Step 4: Simplify right side
    5,220.12x = 20,264,266.38
  5. Step 5: Solve for x
    x = 20,264,266.38/5,220.12
  6. Step 6: Final answer
    x = 3,881.95

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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.