Home / 6,421.28-8,862.16-3,626.76

Finding the Fourth Proportional to 6,421.28, 8,862.16 and 3,626.76

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Solution

The fourth proportional to 6,421.28, 8,862.16 and 3,626.76 is: 5,005.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,421.28 : 8,862.16 = 3,626.76 : x
  2. Step 2: Convert to fraction form
    6,421.28/8,862.16 = 3,626.76/x
  3. Step 3: Cross multiply
    6,421.28x = 8,862.16 × 3,626.76
  4. Step 4: Simplify right side
    6,421.28x = 32,140,927.40
  5. Step 5: Solve for x
    x = 32,140,927.40/6,421.28
  6. Step 6: Final answer
    x = 5,005.38

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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.