Home / 2,102.72-3,154.40-948.80

Finding the Fourth Proportional to 2,102.72, 3,154.40 and 948.80

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Solution

The fourth proportional to 2,102.72, 3,154.40 and 948.80 is: 1,423.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,102.72 : 3,154.40 = 948.80 : x
  2. Step 2: Convert to fraction form
    2,102.72/3,154.40 = 948.80/x
  3. Step 3: Cross multiply
    2,102.72x = 3,154.40 × 948.80
  4. Step 4: Simplify right side
    2,102.72x = 2,992,894.72
  5. Step 5: Solve for x
    x = 2,992,894.72/2,102.72
  6. Step 6: Final answer
    x = 1,423.34

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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.