Home / 1,507.51-2,083.01-1,306.80

Finding the Fourth Proportional to 1,507.51, 2,083.01 and 1,306.80

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Solution

The fourth proportional to 1,507.51, 2,083.01 and 1,306.80 is: 1,805.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,507.51 : 2,083.01 = 1,306.80 : x
  2. Step 2: Convert to fraction form
    1,507.51/2,083.01 = 1,306.80/x
  3. Step 3: Cross multiply
    1,507.51x = 2,083.01 × 1,306.80
  4. Step 4: Simplify right side
    1,507.51x = 2,722,077.47
  5. Step 5: Solve for x
    x = 2,722,077.47/1,507.51
  6. Step 6: Final answer
    x = 1,805.68

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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.