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Finding the Fourth Proportional to 4,988.79, 7,511.94 and 4,119.66

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Solution

The fourth proportional to 4,988.79, 7,511.94 and 4,119.66 is: 6,203.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,988.79 : 7,511.94 = 4,119.66 : x
  2. Step 2: Convert to fraction form
    4,988.79/7,511.94 = 4,119.66/x
  3. Step 3: Cross multiply
    4,988.79x = 7,511.94 × 4,119.66
  4. Step 4: Simplify right side
    4,988.79x = 30,946,638.74
  5. Step 5: Solve for x
    x = 30,946,638.74/4,988.79
  6. Step 6: Final answer
    x = 6,203.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.