Home / 2,787.51-3,841.47-2,000.19

Finding the Fourth Proportional to 2,787.51, 3,841.47 and 2,000.19

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Solution

The fourth proportional to 2,787.51, 3,841.47 and 2,000.19 is: 2,756.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.51 : 3,841.47 = 2,000.19 : x
  2. Step 2: Convert to fraction form
    2,787.51/3,841.47 = 2,000.19/x
  3. Step 3: Cross multiply
    2,787.51x = 3,841.47 × 2,000.19
  4. Step 4: Simplify right side
    2,787.51x = 7,683,669.88
  5. Step 5: Solve for x
    x = 7,683,669.88/2,787.51
  6. Step 6: Final answer
    x = 2,756.46

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Half scale
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Double scale
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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.