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Finding the Fourth Proportional to 7,048.38, 9,726.76 and 3,904.76

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Solution

The fourth proportional to 7,048.38, 9,726.76 and 3,904.76 is: 5,388.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,048.38 : 9,726.76 = 3,904.76 : x
  2. Step 2: Convert to fraction form
    7,048.38/9,726.76 = 3,904.76/x
  3. Step 3: Cross multiply
    7,048.38x = 9,726.76 × 3,904.76
  4. Step 4: Simplify right side
    7,048.38x = 37,980,663.38
  5. Step 5: Solve for x
    x = 37,980,663.38/7,048.38
  6. Step 6: Final answer
    x = 5,388.57

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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.