Home / 7,278.36-10,053.42-5,393.40

Finding the Fourth Proportional to 7,278.36, 10,053.42 and 5,393.40

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Solution

The fourth proportional to 7,278.36, 10,053.42 and 5,393.40 is: 7,449.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.36 : 10,053.42 = 5,393.40 : x
  2. Step 2: Convert to fraction form
    7,278.36/10,053.42 = 5,393.40/x
  3. Step 3: Cross multiply
    7,278.36x = 10,053.42 × 5,393.40
  4. Step 4: Simplify right side
    7,278.36x = 54,222,115.43
  5. Step 5: Solve for x
    x = 54,222,115.43/7,278.36
  6. Step 6: Final answer
    x = 7,449.77

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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.