Home / 5,087.24-7,630.81-1,389.47

Finding the Fourth Proportional to 5,087.24, 7,630.81 and 1,389.47

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Solution

The fourth proportional to 5,087.24, 7,630.81 and 1,389.47 is: 2,084.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,087.24 : 7,630.81 = 1,389.47 : x
  2. Step 2: Convert to fraction form
    5,087.24/7,630.81 = 1,389.47/x
  3. Step 3: Cross multiply
    5,087.24x = 7,630.81 × 1,389.47
  4. Step 4: Simplify right side
    5,087.24x = 10,602,768.56
  5. Step 5: Solve for x
    x = 10,602,768.56/5,087.24
  6. Step 6: Final answer
    x = 2,084.19

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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.