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Finding the Fourth Proportional to 4,878.32, 6,731.65 and 2,888.54

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Solution

The fourth proportional to 4,878.32, 6,731.65 and 2,888.54 is: 3,985.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.32 : 6,731.65 = 2,888.54 : x
  2. Step 2: Convert to fraction form
    4,878.32/6,731.65 = 2,888.54/x
  3. Step 3: Cross multiply
    4,878.32x = 6,731.65 × 2,888.54
  4. Step 4: Simplify right side
    4,878.32x = 19,444,599.41
  5. Step 5: Solve for x
    x = 19,444,599.41/4,878.32
  6. Step 6: Final answer
    x = 3,985.93

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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.