Home / 6,862.81-9,470.58-3,879.28

Finding the Fourth Proportional to 6,862.81, 9,470.58 and 3,879.28

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Solution

The fourth proportional to 6,862.81, 9,470.58 and 3,879.28 is: 5,353.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,862.81 : 9,470.58 = 3,879.28 : x
  2. Step 2: Convert to fraction form
    6,862.81/9,470.58 = 3,879.28/x
  3. Step 3: Cross multiply
    6,862.81x = 9,470.58 × 3,879.28
  4. Step 4: Simplify right side
    6,862.81x = 36,739,031.58
  5. Step 5: Solve for x
    x = 36,739,031.58/6,862.81
  6. Step 6: Final answer
    x = 5,353.35

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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.