Home / 7,119.72-10,689.30-4,534.20

Finding the Fourth Proportional to 7,119.72, 10,689.30 and 4,534.20

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Solution

The fourth proportional to 7,119.72, 10,689.30 and 4,534.20 is: 6,807.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,119.72 : 10,689.30 = 4,534.20 : x
  2. Step 2: Convert to fraction form
    7,119.72/10,689.30 = 4,534.20/x
  3. Step 3: Cross multiply
    7,119.72x = 10,689.30 × 4,534.20
  4. Step 4: Simplify right side
    7,119.72x = 48,467,424.06
  5. Step 5: Solve for x
    x = 48,467,424.06/7,119.72
  6. Step 6: Final answer
    x = 6,807.49

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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.