Home / 7,578.10-11,367.15-3,420.07

Finding the Fourth Proportional to 7,578.10, 11,367.15 and 3,420.07

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Solution

The fourth proportional to 7,578.10, 11,367.15 and 3,420.07 is: 5,130.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,578.10 : 11,367.15 = 3,420.07 : x
  2. Step 2: Convert to fraction form
    7,578.10/11,367.15 = 3,420.07/x
  3. Step 3: Cross multiply
    7,578.10x = 11,367.15 × 3,420.07
  4. Step 4: Simplify right side
    7,578.10x = 38,876,448.70
  5. Step 5: Solve for x
    x = 38,876,448.70/7,578.10
  6. Step 6: Final answer
    x = 5,130.11

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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.