Home / 4,787.47-7,180.63-1,277.74

Finding the Fourth Proportional to 4,787.47, 7,180.63 and 1,277.74

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Solution

The fourth proportional to 4,787.47, 7,180.63 and 1,277.74 is: 1,916.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,787.47 : 7,180.63 = 1,277.74 : x
  2. Step 2: Convert to fraction form
    4,787.47/7,180.63 = 1,277.74/x
  3. Step 3: Cross multiply
    4,787.47x = 7,180.63 × 1,277.74
  4. Step 4: Simplify right side
    4,787.47x = 9,174,957.03
  5. Step 5: Solve for x
    x = 9,174,957.03/4,787.47
  6. Step 6: Final answer
    x = 1,916.45

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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.