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Finding the Fourth Proportional to 4,987.99, 6,877.03 and 4,088.42

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Solution

The fourth proportional to 4,987.99, 6,877.03 and 4,088.42 is: 5,636.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.99 : 6,877.03 = 4,088.42 : x
  2. Step 2: Convert to fraction form
    4,987.99/6,877.03 = 4,088.42/x
  3. Step 3: Cross multiply
    4,987.99x = 6,877.03 × 4,088.42
  4. Step 4: Simplify right side
    4,987.99x = 28,116,186.99
  5. Step 5: Solve for x
    x = 28,116,186.99/4,987.99
  6. Step 6: Final answer
    x = 5,636.78

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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.