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Finding the Fourth Proportional to 7,301.80, 10,955.40 and 7,031.80

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Solution

The fourth proportional to 7,301.80, 10,955.40 and 7,031.80 is: 10,550.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,301.80 : 10,955.40 = 7,031.80 : x
  2. Step 2: Convert to fraction form
    7,301.80/10,955.40 = 7,031.80/x
  3. Step 3: Cross multiply
    7,301.80x = 10,955.40 × 7,031.80
  4. Step 4: Simplify right side
    7,301.80x = 77,036,181.72
  5. Step 5: Solve for x
    x = 77,036,181.72/7,301.80
  6. Step 6: Final answer
    x = 10,550.30

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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.