Home / 5,087.53-7,631.04-1,389.68

Finding the Fourth Proportional to 5,087.53, 7,631.04 and 1,389.68

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Solution

The fourth proportional to 5,087.53, 7,631.04 and 1,389.68 is: 2,084.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,087.53 : 7,631.04 = 1,389.68 : x
  2. Step 2: Convert to fraction form
    5,087.53/7,631.04 = 1,389.68/x
  3. Step 3: Cross multiply
    5,087.53x = 7,631.04 × 1,389.68
  4. Step 4: Simplify right side
    5,087.53x = 10,604,703.67
  5. Step 5: Solve for x
    x = 10,604,703.67/5,087.53
  6. Step 6: Final answer
    x = 2,084.45

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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.