Home / 1,754.32-2,415.72-1,382.80

Finding the Fourth Proportional to 1,754.32, 2,415.72 and 1,382.80

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Solution

The fourth proportional to 1,754.32, 2,415.72 and 1,382.80 is: 1,904.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,754.32 : 2,415.72 = 1,382.80 : x
  2. Step 2: Convert to fraction form
    1,754.32/2,415.72 = 1,382.80/x
  3. Step 3: Cross multiply
    1,754.32x = 2,415.72 × 1,382.80
  4. Step 4: Simplify right side
    1,754.32x = 3,340,457.62
  5. Step 5: Solve for x
    x = 3,340,457.62/1,754.32
  6. Step 6: Final answer
    x = 1,904.13

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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.