Home / 5,118.99-7,061.45-3,420.42

Finding the Fourth Proportional to 5,118.99, 7,061.45 and 3,420.42

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Solution

The fourth proportional to 5,118.99, 7,061.45 and 3,420.42 is: 4,718.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.99 : 7,061.45 = 3,420.42 : x
  2. Step 2: Convert to fraction form
    5,118.99/7,061.45 = 3,420.42/x
  3. Step 3: Cross multiply
    5,118.99x = 7,061.45 × 3,420.42
  4. Step 4: Simplify right side
    5,118.99x = 24,153,107.71
  5. Step 5: Solve for x
    x = 24,153,107.71/5,118.99
  6. Step 6: Final answer
    x = 4,718.33

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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.