Home / 1,750.40-2,415.84-1,121.28

Finding the Fourth Proportional to 1,750.40, 2,415.84 and 1,121.28

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Solution

The fourth proportional to 1,750.40, 2,415.84 and 1,121.28 is: 1,547.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,750.40 : 2,415.84 = 1,121.28 : x
  2. Step 2: Convert to fraction form
    1,750.40/2,415.84 = 1,121.28/x
  3. Step 3: Cross multiply
    1,750.40x = 2,415.84 × 1,121.28
  4. Step 4: Simplify right side
    1,750.40x = 2,708,833.08
  5. Step 5: Solve for x
    x = 2,708,833.08/1,750.40
  6. Step 6: Final answer
    x = 1,547.55

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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.