Home / 7,058.81-9,740.75-3,871.50

Finding the Fourth Proportional to 7,058.81, 9,740.75 and 3,871.50

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Solution

The fourth proportional to 7,058.81, 9,740.75 and 3,871.50 is: 5,342.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,058.81 : 9,740.75 = 3,871.50 : x
  2. Step 2: Convert to fraction form
    7,058.81/9,740.75 = 3,871.50/x
  3. Step 3: Cross multiply
    7,058.81x = 9,740.75 × 3,871.50
  4. Step 4: Simplify right side
    7,058.81x = 37,711,294.27
  5. Step 5: Solve for x
    x = 37,711,294.27/7,058.81
  6. Step 6: Final answer
    x = 5,342.45

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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.