Home / 5,012.91-7,518.78-1,315.51

Finding the Fourth Proportional to 5,012.91, 7,518.78 and 1,315.51

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Solution

The fourth proportional to 5,012.91, 7,518.78 and 1,315.51 is: 1,973.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,012.91 : 7,518.78 = 1,315.51 : x
  2. Step 2: Convert to fraction form
    5,012.91/7,518.78 = 1,315.51/x
  3. Step 3: Cross multiply
    5,012.91x = 7,518.78 × 1,315.51
  4. Step 4: Simplify right side
    5,012.91x = 9,891,011.48
  5. Step 5: Solve for x
    x = 9,891,011.48/5,012.91
  6. Step 6: Final answer
    x = 1,973.11

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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.