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Finding the Fourth Proportional to 7,119.59, 10,679.47 and 4,655.57

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Solution

The fourth proportional to 7,119.59, 10,679.47 and 4,655.57 is: 6,983.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,119.59 : 10,679.47 = 4,655.57 : x
  2. Step 2: Convert to fraction form
    7,119.59/10,679.47 = 4,655.57/x
  3. Step 3: Cross multiply
    7,119.59x = 10,679.47 × 4,655.57
  4. Step 4: Simplify right side
    7,119.59x = 49,718,955.11
  5. Step 5: Solve for x
    x = 49,718,955.11/7,119.59
  6. Step 6: Final answer
    x = 6,983.41

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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.