Home / 6,403.84-9,604.32-1,787.20

Finding the Fourth Proportional to 6,403.84, 9,604.32 and 1,787.20

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Solution

The fourth proportional to 6,403.84, 9,604.32 and 1,787.20 is: 2,680.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,403.84 : 9,604.32 = 1,787.20 : x
  2. Step 2: Convert to fraction form
    6,403.84/9,604.32 = 1,787.20/x
  3. Step 3: Cross multiply
    6,403.84x = 9,604.32 × 1,787.20
  4. Step 4: Simplify right side
    6,403.84x = 17,164,840.70
  5. Step 5: Solve for x
    x = 17,164,840.70/6,403.84
  6. Step 6: Final answer
    x = 2,680.40

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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.