Home / 4,778.99-7,159.15-3,130.53

Finding the Fourth Proportional to 4,778.99, 7,159.15 and 3,130.53

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Solution

The fourth proportional to 4,778.99, 7,159.15 and 3,130.53 is: 4,689.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,778.99 : 7,159.15 = 3,130.53 : x
  2. Step 2: Convert to fraction form
    4,778.99/7,159.15 = 3,130.53/x
  3. Step 3: Cross multiply
    4,778.99x = 7,159.15 × 3,130.53
  4. Step 4: Simplify right side
    4,778.99x = 22,411,933.85
  5. Step 5: Solve for x
    x = 22,411,933.85/4,778.99
  6. Step 6: Final answer
    x = 4,689.68

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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.