Home / 9,178.14-12,665.88-4,986.39

Finding the Fourth Proportional to 9,178.14, 12,665.88 and 4,986.39

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Solution

The fourth proportional to 9,178.14, 12,665.88 and 4,986.39 is: 6,881.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,178.14 : 12,665.88 = 4,986.39 : x
  2. Step 2: Convert to fraction form
    9,178.14/12,665.88 = 4,986.39/x
  3. Step 3: Cross multiply
    9,178.14x = 12,665.88 × 4,986.39
  4. Step 4: Simplify right side
    9,178.14x = 63,157,017.37
  5. Step 5: Solve for x
    x = 63,157,017.37/9,178.14
  6. Step 6: Final answer
    x = 6,881.24

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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.