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Finding the Fourth Proportional to 7,148.56, 9,864.30 and 4,004.68

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Solution

The fourth proportional to 7,148.56, 9,864.30 and 4,004.68 is: 5,526.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,148.56 : 9,864.30 = 4,004.68 : x
  2. Step 2: Convert to fraction form
    7,148.56/9,864.30 = 4,004.68/x
  3. Step 3: Cross multiply
    7,148.56x = 9,864.30 × 4,004.68
  4. Step 4: Simplify right side
    7,148.56x = 39,503,364.92
  5. Step 5: Solve for x
    x = 39,503,364.92/7,148.56
  6. Step 6: Final answer
    x = 5,526.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.