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Finding the Fourth Proportional to 4,985.84, 6,878.22 and 2,888.84

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Solution

The fourth proportional to 4,985.84, 6,878.22 and 2,888.84 is: 3,985.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.84 : 6,878.22 = 2,888.84 : x
  2. Step 2: Convert to fraction form
    4,985.84/6,878.22 = 2,888.84/x
  3. Step 3: Cross multiply
    4,985.84x = 6,878.22 × 2,888.84
  4. Step 4: Simplify right side
    4,985.84x = 19,870,077.06
  5. Step 5: Solve for x
    x = 19,870,077.06/4,985.84
  6. Step 6: Final answer
    x = 3,985.30

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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.