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Finding the Fourth Proportional to 7,009.20, 10,448.28 and 6,902.28

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Solution

The fourth proportional to 7,009.20, 10,448.28 and 6,902.28 is: 10,288.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,009.20 : 10,448.28 = 6,902.28 : x
  2. Step 2: Convert to fraction form
    7,009.20/10,448.28 = 6,902.28/x
  3. Step 3: Cross multiply
    7,009.20x = 10,448.28 × 6,902.28
  4. Step 4: Simplify right side
    7,009.20x = 72,116,954.08
  5. Step 5: Solve for x
    x = 72,116,954.08/7,009.20
  6. Step 6: Final answer
    x = 10,288.90

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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.