Home / 9,178.98-12,666.81-4,987.26

Finding the Fourth Proportional to 9,178.98, 12,666.81 and 4,987.26

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Solution

The fourth proportional to 9,178.98, 12,666.81 and 4,987.26 is: 6,882.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,178.98 : 12,666.81 = 4,987.26 : x
  2. Step 2: Convert to fraction form
    9,178.98/12,666.81 = 4,987.26/x
  3. Step 3: Cross multiply
    9,178.98x = 12,666.81 × 4,987.26
  4. Step 4: Simplify right side
    9,178.98x = 63,172,674.84
  5. Step 5: Solve for x
    x = 63,172,674.84/9,178.98
  6. Step 6: Final answer
    x = 6,882.32

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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.