Home / 1,687.60-2,327.38-1,058.21

Finding the Fourth Proportional to 1,687.60, 2,327.38 and 1,058.21

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Solution

The fourth proportional to 1,687.60, 2,327.38 and 1,058.21 is: 1,459.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687.60 : 2,327.38 = 1,058.21 : x
  2. Step 2: Convert to fraction form
    1,687.60/2,327.38 = 1,058.21/x
  3. Step 3: Cross multiply
    1,687.60x = 2,327.38 × 1,058.21
  4. Step 4: Simplify right side
    1,687.60x = 2,462,842.51
  5. Step 5: Solve for x
    x = 2,462,842.51/1,687.60
  6. Step 6: Final answer
    x = 1,459.38

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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.