Home / 8,721.81-12,036.11-4,742.93

Finding the Fourth Proportional to 8,721.81, 12,036.11 and 4,742.93

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Solution

The fourth proportional to 8,721.81, 12,036.11 and 4,742.93 is: 6,545.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.81 : 12,036.11 = 4,742.93 : x
  2. Step 2: Convert to fraction form
    8,721.81/12,036.11 = 4,742.93/x
  3. Step 3: Cross multiply
    8,721.81x = 12,036.11 × 4,742.93
  4. Step 4: Simplify right side
    8,721.81x = 57,086,433.58
  5. Step 5: Solve for x
    x = 57,086,433.58/8,721.81
  6. Step 6: Final answer
    x = 6,545.25

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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.