Home / 1,971.16-2,721.48-1,522.20

Finding the Fourth Proportional to 1,971.16, 2,721.48 and 1,522.20

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Solution

The fourth proportional to 1,971.16, 2,721.48 and 1,522.20 is: 2,101.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.16 : 2,721.48 = 1,522.20 : x
  2. Step 2: Convert to fraction form
    1,971.16/2,721.48 = 1,522.20/x
  3. Step 3: Cross multiply
    1,971.16x = 2,721.48 × 1,522.20
  4. Step 4: Simplify right side
    1,971.16x = 4,142,636.86
  5. Step 5: Solve for x
    x = 4,142,636.86/1,971.16
  6. Step 6: Final answer
    x = 2,101.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.