Home / 1,680.96-2,320.32-1,186.08

Finding the Fourth Proportional to 1,680.96, 2,320.32 and 1,186.08

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Solution

The fourth proportional to 1,680.96, 2,320.32 and 1,186.08 is: 1,637.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.96 : 2,320.32 = 1,186.08 : x
  2. Step 2: Convert to fraction form
    1,680.96/2,320.32 = 1,186.08/x
  3. Step 3: Cross multiply
    1,680.96x = 2,320.32 × 1,186.08
  4. Step 4: Simplify right side
    1,680.96x = 2,752,085.15
  5. Step 5: Solve for x
    x = 2,752,085.15/1,680.96
  6. Step 6: Final answer
    x = 1,637.21

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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.