Home / 2,153.72-2,971.26-1,436.24

Finding the Fourth Proportional to 2,153.72, 2,971.26 and 1,436.24

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Solution

The fourth proportional to 2,153.72, 2,971.26 and 1,436.24 is: 1,981.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,153.72 : 2,971.26 = 1,436.24 : x
  2. Step 2: Convert to fraction form
    2,153.72/2,971.26 = 1,436.24/x
  3. Step 3: Cross multiply
    2,153.72x = 2,971.26 × 1,436.24
  4. Step 4: Simplify right side
    2,153.72x = 4,267,442.46
  5. Step 5: Solve for x
    x = 4,267,442.46/2,153.72
  6. Step 6: Final answer
    x = 1,981.43

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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.