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Finding the Fourth Proportional to 1,852.84, 2,557.84 and 1,223.78

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Solution

The fourth proportional to 1,852.84, 2,557.84 and 1,223.78 is: 1,689.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,852.84 : 2,557.84 = 1,223.78 : x
  2. Step 2: Convert to fraction form
    1,852.84/2,557.84 = 1,223.78/x
  3. Step 3: Cross multiply
    1,852.84x = 2,557.84 × 1,223.78
  4. Step 4: Simplify right side
    1,852.84x = 3,130,233.44
  5. Step 5: Solve for x
    x = 3,130,233.44/1,852.84
  6. Step 6: Final answer
    x = 1,689.42

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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.