Home / 8,721.29-12,035.48-4,742.49

Finding the Fourth Proportional to 8,721.29, 12,035.48 and 4,742.49

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Solution

The fourth proportional to 8,721.29, 12,035.48 and 4,742.49 is: 6,544.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.29 : 12,035.48 = 4,742.49 : x
  2. Step 2: Convert to fraction form
    8,721.29/12,035.48 = 4,742.49/x
  3. Step 3: Cross multiply
    8,721.29x = 12,035.48 × 4,742.49
  4. Step 4: Simplify right side
    8,721.29x = 57,078,119.83
  5. Step 5: Solve for x
    x = 57,078,119.83/8,721.29
  6. Step 6: Final answer
    x = 6,544.69

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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.