Home / 7,139.24-9,851.55-4,267.90

Finding the Fourth Proportional to 7,139.24, 9,851.55 and 4,267.90

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Solution

The fourth proportional to 7,139.24, 9,851.55 and 4,267.90 is: 5,889.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.24 : 9,851.55 = 4,267.90 : x
  2. Step 2: Convert to fraction form
    7,139.24/9,851.55 = 4,267.90/x
  3. Step 3: Cross multiply
    7,139.24x = 9,851.55 × 4,267.90
  4. Step 4: Simplify right side
    7,139.24x = 42,045,380.99
  5. Step 5: Solve for x
    x = 42,045,380.99/7,139.24
  6. Step 6: Final answer
    x = 5,889.34

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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.