Home / 7,139.48-10,701.55-2,976.35

Finding the Fourth Proportional to 7,139.48, 10,701.55 and 2,976.35

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Solution

The fourth proportional to 7,139.48, 10,701.55 and 2,976.35 is: 4,461.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.48 : 10,701.55 = 2,976.35 : x
  2. Step 2: Convert to fraction form
    7,139.48/10,701.55 = 2,976.35/x
  3. Step 3: Cross multiply
    7,139.48x = 10,701.55 × 2,976.35
  4. Step 4: Simplify right side
    7,139.48x = 31,851,508.56
  5. Step 5: Solve for x
    x = 31,851,508.56/7,139.48
  6. Step 6: Final answer
    x = 4,461.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.