Home / 6,430.64-8,874.61-3,778.90

Finding the Fourth Proportional to 6,430.64, 8,874.61 and 3,778.90

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Solution

The fourth proportional to 6,430.64, 8,874.61 and 3,778.90 is: 5,215.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,430.64 : 8,874.61 = 3,778.90 : x
  2. Step 2: Convert to fraction form
    6,430.64/8,874.61 = 3,778.90/x
  3. Step 3: Cross multiply
    6,430.64x = 8,874.61 × 3,778.90
  4. Step 4: Simplify right side
    6,430.64x = 33,536,303.27
  5. Step 5: Solve for x
    x = 33,536,303.27/6,430.64
  6. Step 6: Final answer
    x = 5,215.08

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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.