Home / 1,297.01-1,789.87-707.54

Finding the Fourth Proportional to 1,297.01, 1,789.87 and 707.54

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Solution

The fourth proportional to 1,297.01, 1,789.87 and 707.54 is: 976.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297.01 : 1,789.87 = 707.54 : x
  2. Step 2: Convert to fraction form
    1,297.01/1,789.87 = 707.54/x
  3. Step 3: Cross multiply
    1,297.01x = 1,789.87 × 707.54
  4. Step 4: Simplify right side
    1,297.01x = 1,266,404.62
  5. Step 5: Solve for x
    x = 1,266,404.62/1,297.01
  6. Step 6: Final answer
    x = 976.40

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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.