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Finding the Fourth Proportional to 7,058.48, 9,740.80 and 3,914.72

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Solution

The fourth proportional to 7,058.48, 9,740.80 and 3,914.72 is: 5,402.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,058.48 : 9,740.80 = 3,914.72 : x
  2. Step 2: Convert to fraction form
    7,058.48/9,740.80 = 3,914.72/x
  3. Step 3: Cross multiply
    7,058.48x = 9,740.80 × 3,914.72
  4. Step 4: Simplify right side
    7,058.48x = 38,132,504.58
  5. Step 5: Solve for x
    x = 38,132,504.58/7,058.48
  6. Step 6: Final answer
    x = 5,402.37

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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.