Home / 5,100.16-7,038.58-2,831.62

Finding the Fourth Proportional to 5,100.16, 7,038.58 and 2,831.62

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Solution

The fourth proportional to 5,100.16, 7,038.58 and 2,831.62 is: 3,907.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,100.16 : 7,038.58 = 2,831.62 : x
  2. Step 2: Convert to fraction form
    5,100.16/7,038.58 = 2,831.62/x
  3. Step 3: Cross multiply
    5,100.16x = 7,038.58 × 2,831.62
  4. Step 4: Simplify right side
    5,100.16x = 19,930,583.90
  5. Step 5: Solve for x
    x = 19,930,583.90/5,100.16
  6. Step 6: Final answer
    x = 3,907.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.