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Finding the Fourth Proportional to 7,133.44, 10,700.80 and 1,869.20

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Solution

The fourth proportional to 7,133.44, 10,700.80 and 1,869.20 is: 2,803.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,133.44 : 10,700.80 = 1,869.20 : x
  2. Step 2: Convert to fraction form
    7,133.44/10,700.80 = 1,869.20/x
  3. Step 3: Cross multiply
    7,133.44x = 10,700.80 × 1,869.20
  4. Step 4: Simplify right side
    7,133.44x = 20,001,935.36
  5. Step 5: Solve for x
    x = 20,001,935.36/7,133.44
  6. Step 6: Final answer
    x = 2,803.97

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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.