Home / 1,266.91-1,748.25-707.35

Finding the Fourth Proportional to 1,266.91, 1,748.25 and 707.35

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Solution

The fourth proportional to 1,266.91, 1,748.25 and 707.35 is: 976.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266.91 : 1,748.25 = 707.35 : x
  2. Step 2: Convert to fraction form
    1,266.91/1,748.25 = 707.35/x
  3. Step 3: Cross multiply
    1,266.91x = 1,748.25 × 707.35
  4. Step 4: Simplify right side
    1,266.91x = 1,236,623.54
  5. Step 5: Solve for x
    x = 1,236,623.54/1,266.91
  6. Step 6: Final answer
    x = 976.10

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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.