Home / 4,945.37-7,417.39-1,387.75

Finding the Fourth Proportional to 4,945.37, 7,417.39 and 1,387.75

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Solution

The fourth proportional to 4,945.37, 7,417.39 and 1,387.75 is: 2,081.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,945.37 : 7,417.39 = 1,387.75 : x
  2. Step 2: Convert to fraction form
    4,945.37/7,417.39 = 1,387.75/x
  3. Step 3: Cross multiply
    4,945.37x = 7,417.39 × 1,387.75
  4. Step 4: Simplify right side
    4,945.37x = 10,293,482.97
  5. Step 5: Solve for x
    x = 10,293,482.97/4,945.37
  6. Step 6: Final answer
    x = 2,081.44

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1.5x scale

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.