Home / 8,484.81-11,718.19-6,618.57

Finding the Fourth Proportional to 8,484.81, 11,718.19 and 6,618.57

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Solution

The fourth proportional to 8,484.81, 11,718.19 and 6,618.57 is: 9,140.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,484.81 : 11,718.19 = 6,618.57 : x
  2. Step 2: Convert to fraction form
    8,484.81/11,718.19 = 6,618.57/x
  3. Step 3: Cross multiply
    8,484.81x = 11,718.19 × 6,618.57
  4. Step 4: Simplify right side
    8,484.81x = 77,557,660.79
  5. Step 5: Solve for x
    x = 77,557,660.79/8,484.81
  6. Step 6: Final answer
    x = 9,140.77

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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.