Home / 1,244.70-1,717.36-921.44

Finding the Fourth Proportional to 1,244.70, 1,717.36 and 921.44

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Solution

The fourth proportional to 1,244.70, 1,717.36 and 921.44 is: 1,271.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,244.70 : 1,717.36 = 921.44 : x
  2. Step 2: Convert to fraction form
    1,244.70/1,717.36 = 921.44/x
  3. Step 3: Cross multiply
    1,244.70x = 1,717.36 × 921.44
  4. Step 4: Simplify right side
    1,244.70x = 1,582,446.19
  5. Step 5: Solve for x
    x = 1,582,446.19/1,244.70
  6. Step 6: Final answer
    x = 1,271.35

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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.