Home / 7,145.47-10,719.93-2,983.17

Finding the Fourth Proportional to 7,145.47, 10,719.93 and 2,983.17

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Solution

The fourth proportional to 7,145.47, 10,719.93 and 2,983.17 is: 4,475.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,145.47 : 10,719.93 = 2,983.17 : x
  2. Step 2: Convert to fraction form
    7,145.47/10,719.93 = 2,983.17/x
  3. Step 3: Cross multiply
    7,145.47x = 10,719.93 × 2,983.17
  4. Step 4: Simplify right side
    7,145.47x = 31,979,373.58
  5. Step 5: Solve for x
    x = 31,979,373.58/7,145.47
  6. Step 6: Final answer
    x = 4,475.48

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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.