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Finding the Fourth Proportional to 6,434.65, 8,879.90 and 3,602.20

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Solution

The fourth proportional to 6,434.65, 8,879.90 and 3,602.20 is: 4,971.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,434.65 : 8,879.90 = 3,602.20 : x
  2. Step 2: Convert to fraction form
    6,434.65/8,879.90 = 3,602.20/x
  3. Step 3: Cross multiply
    6,434.65x = 8,879.90 × 3,602.20
  4. Step 4: Simplify right side
    6,434.65x = 31,987,157.77
  5. Step 5: Solve for x
    x = 31,987,157.77/6,434.65
  6. Step 6: Final answer
    x = 4,971.08

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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.