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Finding the Fourth Proportional to 6,430.30, 8,869.84 and 4,412.79

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Solution

The fourth proportional to 6,430.30, 8,869.84 and 4,412.79 is: 6,086.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,430.30 : 8,869.84 = 4,412.79 : x
  2. Step 2: Convert to fraction form
    6,430.30/8,869.84 = 4,412.79/x
  3. Step 3: Cross multiply
    6,430.30x = 8,869.84 × 4,412.79
  4. Step 4: Simplify right side
    6,430.30x = 39,140,730.22
  5. Step 5: Solve for x
    x = 39,140,730.22/6,430.30
  6. Step 6: Final answer
    x = 6,086.92

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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.