Home / 8,787.05-12,127.29-5,011.58

Finding the Fourth Proportional to 8,787.05, 12,127.29 and 5,011.58

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Solution

The fourth proportional to 8,787.05, 12,127.29 and 5,011.58 is: 6,916.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,787.05 : 12,127.29 = 5,011.58 : x
  2. Step 2: Convert to fraction form
    8,787.05/12,127.29 = 5,011.58/x
  3. Step 3: Cross multiply
    8,787.05x = 12,127.29 × 5,011.58
  4. Step 4: Simplify right side
    8,787.05x = 60,776,884.02
  5. Step 5: Solve for x
    x = 60,776,884.02/8,787.05
  6. Step 6: Final answer
    x = 6,916.64

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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.