Home / 7,787.25-10,747.40-5,140.17

Finding the Fourth Proportional to 7,787.25, 10,747.40 and 5,140.17

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Solution

The fourth proportional to 7,787.25, 10,747.40 and 5,140.17 is: 7,094.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,787.25 : 10,747.40 = 5,140.17 : x
  2. Step 2: Convert to fraction form
    7,787.25/10,747.40 = 5,140.17/x
  3. Step 3: Cross multiply
    7,787.25x = 10,747.40 × 5,140.17
  4. Step 4: Simplify right side
    7,787.25x = 55,243,437.36
  5. Step 5: Solve for x
    x = 55,243,437.36/7,787.25
  6. Step 6: Final answer
    x = 7,094.09

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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.