Home / 5,290.68-7,938.18-1,828.20

Finding the Fourth Proportional to 5,290.68, 7,938.18 and 1,828.20

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Solution

The fourth proportional to 5,290.68, 7,938.18 and 1,828.20 is: 2,743.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,290.68 : 7,938.18 = 1,828.20 : x
  2. Step 2: Convert to fraction form
    5,290.68/7,938.18 = 1,828.20/x
  3. Step 3: Cross multiply
    5,290.68x = 7,938.18 × 1,828.20
  4. Step 4: Simplify right side
    5,290.68x = 14,512,580.68
  5. Step 5: Solve for x
    x = 14,512,580.68/5,290.68
  6. Step 6: Final answer
    x = 2,743.05

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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.