Home / 2,119.32-2,924.46-1,678.32

Finding the Fourth Proportional to 2,119.32, 2,924.46 and 1,678.32

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Solution

The fourth proportional to 2,119.32, 2,924.46 and 1,678.32 is: 2,315.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.32 : 2,924.46 = 1,678.32 : x
  2. Step 2: Convert to fraction form
    2,119.32/2,924.46 = 1,678.32/x
  3. Step 3: Cross multiply
    2,119.32x = 2,924.46 × 1,678.32
  4. Step 4: Simplify right side
    2,119.32x = 4,908,179.71
  5. Step 5: Solve for x
    x = 4,908,179.71/2,119.32
  6. Step 6: Final answer
    x = 2,315.92

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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.