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Finding the Fourth Proportional to 2,988.84, 4,483.62 and 1,257.24

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Solution

The fourth proportional to 2,988.84, 4,483.62 and 1,257.24 is: 1,886.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.84 : 4,483.62 = 1,257.24 : x
  2. Step 2: Convert to fraction form
    2,988.84/4,483.62 = 1,257.24/x
  3. Step 3: Cross multiply
    2,988.84x = 4,483.62 × 1,257.24
  4. Step 4: Simplify right side
    2,988.84x = 5,636,986.41
  5. Step 5: Solve for x
    x = 5,636,986.41/2,988.84
  6. Step 6: Final answer
    x = 1,886.01

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1.5x scale

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.