Home / 5,380.49-8,071.65-1,870.76

Finding the Fourth Proportional to 5,380.49, 8,071.65 and 1,870.76

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Solution

The fourth proportional to 5,380.49, 8,071.65 and 1,870.76 is: 2,806.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,380.49 : 8,071.65 = 1,870.76 : x
  2. Step 2: Convert to fraction form
    5,380.49/8,071.65 = 1,870.76/x
  3. Step 3: Cross multiply
    5,380.49x = 8,071.65 × 1,870.76
  4. Step 4: Simplify right side
    5,380.49x = 15,100,140.13
  5. Step 5: Solve for x
    x = 15,100,140.13/5,380.49
  6. Step 6: Final answer
    x = 2,806.46

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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.