Home / 4,778.90-7,165.80-1,658.11

Finding the Fourth Proportional to 4,778.90, 7,165.80 and 1,658.11

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Solution

The fourth proportional to 4,778.90, 7,165.80 and 1,658.11 is: 2,486.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,778.90 : 7,165.80 = 1,658.11 : x
  2. Step 2: Convert to fraction form
    4,778.90/7,165.80 = 1,658.11/x
  3. Step 3: Cross multiply
    4,778.90x = 7,165.80 × 1,658.11
  4. Step 4: Simplify right side
    4,778.90x = 11,881,684.64
  5. Step 5: Solve for x
    x = 11,881,684.64/4,778.90
  6. Step 6: Final answer
    x = 2,486.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.