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Finding the Fourth Proportional to 7,077.70, 10,561.19 and 7,029.10

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Solution

The fourth proportional to 7,077.70, 10,561.19 and 7,029.10 is: 10,488.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,077.70 : 10,561.19 = 7,029.10 : x
  2. Step 2: Convert to fraction form
    7,077.70/10,561.19 = 7,029.10/x
  3. Step 3: Cross multiply
    7,077.70x = 10,561.19 × 7,029.10
  4. Step 4: Simplify right side
    7,077.70x = 74,235,660.63
  5. Step 5: Solve for x
    x = 74,235,660.63/7,077.70
  6. Step 6: Final answer
    x = 10,488.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.