Home / 1,479.09-2,219.38-985.83

Finding the Fourth Proportional to 1,479.09, 2,219.38 and 985.83

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Solution

The fourth proportional to 1,479.09, 2,219.38 and 985.83 is: 1,479.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,479.09 : 2,219.38 = 985.83 : x
  2. Step 2: Convert to fraction form
    1,479.09/2,219.38 = 985.83/x
  3. Step 3: Cross multiply
    1,479.09x = 2,219.38 × 985.83
  4. Step 4: Simplify right side
    1,479.09x = 2,187,931.39
  5. Step 5: Solve for x
    x = 2,187,931.39/1,479.09
  6. Step 6: Final answer
    x = 1,479.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.