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Finding the Fourth Proportional to 2,347.79, 3,521.03 and 787.82

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Solution

The fourth proportional to 2,347.79, 3,521.03 and 787.82 is: 1,181.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,347.79 : 3,521.03 = 787.82 : x
  2. Step 2: Convert to fraction form
    2,347.79/3,521.03 = 787.82/x
  3. Step 3: Cross multiply
    2,347.79x = 3,521.03 × 787.82
  4. Step 4: Simplify right side
    2,347.79x = 2,773,916.31
  5. Step 5: Solve for x
    x = 2,773,916.31/2,347.79
  6. Step 6: Final answer
    x = 1,181.50

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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.