Home / 7,829.28-10,802.16-5,175.72

Finding the Fourth Proportional to 7,829.28, 10,802.16 and 5,175.72

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Solution

The fourth proportional to 7,829.28, 10,802.16 and 5,175.72 is: 7,141.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,829.28 : 10,802.16 = 5,175.72 : x
  2. Step 2: Convert to fraction form
    7,829.28/10,802.16 = 5,175.72/x
  3. Step 3: Cross multiply
    7,829.28x = 10,802.16 × 5,175.72
  4. Step 4: Simplify right side
    7,829.28x = 55,908,955.56
  5. Step 5: Solve for x
    x = 55,908,955.56/7,829.28
  6. Step 6: Final answer
    x = 7,141.01

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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.