Home / 2,191.79-3,024.68-1,247.77

Finding the Fourth Proportional to 2,191.79, 3,024.68 and 1,247.77

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Solution

The fourth proportional to 2,191.79, 3,024.68 and 1,247.77 is: 1,721.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.79 : 3,024.68 = 1,247.77 : x
  2. Step 2: Convert to fraction form
    2,191.79/3,024.68 = 1,247.77/x
  3. Step 3: Cross multiply
    2,191.79x = 3,024.68 × 1,247.77
  4. Step 4: Simplify right side
    2,191.79x = 3,774,102.51
  5. Step 5: Solve for x
    x = 3,774,102.51/2,191.79
  6. Step 6: Final answer
    x = 1,721.93

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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.