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Finding the Fourth Proportional to 7,622.60, 11,378.10 and 7,041.30

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Solution

The fourth proportional to 7,622.60, 11,378.10 and 7,041.30 is: 10,510.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,622.60 : 11,378.10 = 7,041.30 : x
  2. Step 2: Convert to fraction form
    7,622.60/11,378.10 = 7,041.30/x
  3. Step 3: Cross multiply
    7,622.60x = 11,378.10 × 7,041.30
  4. Step 4: Simplify right side
    7,622.60x = 80,116,599.27
  5. Step 5: Solve for x
    x = 80,116,599.27/7,622.60
  6. Step 6: Final answer
    x = 10,510.41

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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.