Home / 6,615.45-9,130.05-3,963.51

Finding the Fourth Proportional to 6,615.45, 9,130.05 and 3,963.51

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Solution

The fourth proportional to 6,615.45, 9,130.05 and 3,963.51 is: 5,470.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,615.45 : 9,130.05 = 3,963.51 : x
  2. Step 2: Convert to fraction form
    6,615.45/9,130.05 = 3,963.51/x
  3. Step 3: Cross multiply
    6,615.45x = 9,130.05 × 3,963.51
  4. Step 4: Simplify right side
    6,615.45x = 36,187,044.48
  5. Step 5: Solve for x
    x = 36,187,044.48/6,615.45
  6. Step 6: Final answer
    x = 5,470.08

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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.