Home / 2,918.20-4,376.40-838.04

Finding the Fourth Proportional to 2,918.20, 4,376.40 and 838.04

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Solution

The fourth proportional to 2,918.20, 4,376.40 and 838.04 is: 1,256.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.20 : 4,376.40 = 838.04 : x
  2. Step 2: Convert to fraction form
    2,918.20/4,376.40 = 838.04/x
  3. Step 3: Cross multiply
    2,918.20x = 4,376.40 × 838.04
  4. Step 4: Simplify right side
    2,918.20x = 3,667,598.26
  5. Step 5: Solve for x
    x = 3,667,598.26/2,918.20
  6. Step 6: Final answer
    x = 1,256.80

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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.