Home / 1,266.51-1,747.89-707.19

Finding the Fourth Proportional to 1,266.51, 1,747.89 and 707.19

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Solution

The fourth proportional to 1,266.51, 1,747.89 and 707.19 is: 975.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266.51 : 1,747.89 = 707.19 : x
  2. Step 2: Convert to fraction form
    1,266.51/1,747.89 = 707.19/x
  3. Step 3: Cross multiply
    1,266.51x = 1,747.89 × 707.19
  4. Step 4: Simplify right side
    1,266.51x = 1,236,090.33
  5. Step 5: Solve for x
    x = 1,236,090.33/1,266.51
  6. Step 6: Final answer
    x = 975.98

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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.