Home / 4,980.06-6,872.58-2,885.40

Finding the Fourth Proportional to 4,980.06, 6,872.58 and 2,885.40

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Solution

The fourth proportional to 4,980.06, 6,872.58 and 2,885.40 is: 3,981.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,980.06 : 6,872.58 = 2,885.40 : x
  2. Step 2: Convert to fraction form
    4,980.06/6,872.58 = 2,885.40/x
  3. Step 3: Cross multiply
    4,980.06x = 6,872.58 × 2,885.40
  4. Step 4: Simplify right side
    4,980.06x = 19,830,142.33
  5. Step 5: Solve for x
    x = 19,830,142.33/4,980.06
  6. Step 6: Final answer
    x = 3,981.91

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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.