Home / 8,973.87-12,357.81-6,981.07

Finding the Fourth Proportional to 8,973.87, 12,357.81 and 6,981.07

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Solution

The fourth proportional to 8,973.87, 12,357.81 and 6,981.07 is: 9,613.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,973.87 : 12,357.81 = 6,981.07 : x
  2. Step 2: Convert to fraction form
    8,973.87/12,357.81 = 6,981.07/x
  3. Step 3: Cross multiply
    8,973.87x = 12,357.81 × 6,981.07
  4. Step 4: Simplify right side
    8,973.87x = 86,270,736.66
  5. Step 5: Solve for x
    x = 86,270,736.66/8,973.87
  6. Step 6: Final answer
    x = 9,613.55

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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.