Home / 7,913.72-10,924.62-5,120.12

Finding the Fourth Proportional to 7,913.72, 10,924.62 and 5,120.12

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Solution

The fourth proportional to 7,913.72, 10,924.62 and 5,120.12 is: 7,068.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,913.72 : 10,924.62 = 5,120.12 : x
  2. Step 2: Convert to fraction form
    7,913.72/10,924.62 = 5,120.12/x
  3. Step 3: Cross multiply
    7,913.72x = 10,924.62 × 5,120.12
  4. Step 4: Simplify right side
    7,913.72x = 55,935,365.35
  5. Step 5: Solve for x
    x = 55,935,365.35/7,913.72
  6. Step 6: Final answer
    x = 7,068.15

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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.