Home / 1,344.28-1,853.35-971.35

Finding the Fourth Proportional to 1,344.28, 1,853.35 and 971.35

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Solution

The fourth proportional to 1,344.28, 1,853.35 and 971.35 is: 1,339.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,344.28 : 1,853.35 = 971.35 : x
  2. Step 2: Convert to fraction form
    1,344.28/1,853.35 = 971.35/x
  3. Step 3: Cross multiply
    1,344.28x = 1,853.35 × 971.35
  4. Step 4: Simplify right side
    1,344.28x = 1,800,244.46
  5. Step 5: Solve for x
    x = 1,800,244.46/1,344.28
  6. Step 6: Final answer
    x = 1,339.19

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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.