Home / 4,867.76-6,717.12-2,878.40

Finding the Fourth Proportional to 4,867.76, 6,717.12 and 2,878.40

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Solution

The fourth proportional to 4,867.76, 6,717.12 and 2,878.40 is: 3,971.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,867.76 : 6,717.12 = 2,878.40 : x
  2. Step 2: Convert to fraction form
    4,867.76/6,717.12 = 2,878.40/x
  3. Step 3: Cross multiply
    4,867.76x = 6,717.12 × 2,878.40
  4. Step 4: Simplify right side
    4,867.76x = 19,334,558.21
  5. Step 5: Solve for x
    x = 19,334,558.21/4,867.76
  6. Step 6: Final answer
    x = 3,971.96

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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.