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Finding the Fourth Proportional to 7,772.66, 10,725.70 and 4,787.40

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Solution

The fourth proportional to 7,772.66, 10,725.70 and 4,787.40 is: 6,606.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,772.66 : 10,725.70 = 4,787.40 : x
  2. Step 2: Convert to fraction form
    7,772.66/10,725.70 = 4,787.40/x
  3. Step 3: Cross multiply
    7,772.66x = 10,725.70 × 4,787.40
  4. Step 4: Simplify right side
    7,772.66x = 51,348,192.24
  5. Step 5: Solve for x
    x = 51,348,192.24/7,772.66
  6. Step 6: Final answer
    x = 6,606.26

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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.