Home / 5,087.73-7,630.19-1,390.10

Finding the Fourth Proportional to 5,087.73, 7,630.19 and 1,390.10

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Solution

The fourth proportional to 5,087.73, 7,630.19 and 1,390.10 is: 2,084.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,087.73 : 7,630.19 = 1,390.10 : x
  2. Step 2: Convert to fraction form
    5,087.73/7,630.19 = 1,390.10/x
  3. Step 3: Cross multiply
    5,087.73x = 7,630.19 × 1,390.10
  4. Step 4: Simplify right side
    5,087.73x = 10,606,739.24
  5. Step 5: Solve for x
    x = 10,606,739.24/5,087.73
  6. Step 6: Final answer
    x = 2,084.77

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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.