Home / 2,787.78-3,848.76-1,669.08

Finding the Fourth Proportional to 2,787.78, 3,848.76 and 1,669.08

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Solution

The fourth proportional to 2,787.78, 3,848.76 and 1,669.08 is: 2,304.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.78 : 3,848.76 = 1,669.08 : x
  2. Step 2: Convert to fraction form
    2,787.78/3,848.76 = 1,669.08/x
  3. Step 3: Cross multiply
    2,787.78x = 3,848.76 × 1,669.08
  4. Step 4: Simplify right side
    2,787.78x = 6,423,888.34
  5. Step 5: Solve for x
    x = 6,423,888.34/2,787.78
  6. Step 6: Final answer
    x = 2,304.30

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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.