Home / 7,278.20-10,045.00-4,447.21

Finding the Fourth Proportional to 7,278.20, 10,045.00 and 4,447.21

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Solution

The fourth proportional to 7,278.20, 10,045.00 and 4,447.21 is: 6,137.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.20 : 10,045.00 = 4,447.21 : x
  2. Step 2: Convert to fraction form
    7,278.20/10,045.00 = 4,447.21/x
  3. Step 3: Cross multiply
    7,278.20x = 10,045.00 × 4,447.21
  4. Step 4: Simplify right side
    7,278.20x = 44,672,264.49
  5. Step 5: Solve for x
    x = 44,672,264.49/7,278.20
  6. Step 6: Final answer
    x = 6,137.82

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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.