Home / 2,185.39-3,015.68-1,345.90

Finding the Fourth Proportional to 2,185.39, 3,015.68 and 1,345.90

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Solution

The fourth proportional to 2,185.39, 3,015.68 and 1,345.90 is: 1,857.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,185.39 : 3,015.68 = 1,345.90 : x
  2. Step 2: Convert to fraction form
    2,185.39/3,015.68 = 1,345.90/x
  3. Step 3: Cross multiply
    2,185.39x = 3,015.68 × 1,345.90
  4. Step 4: Simplify right side
    2,185.39x = 4,058,802.67
  5. Step 5: Solve for x
    x = 4,058,802.67/2,185.39
  6. Step 6: Final answer
    x = 1,857.25

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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.