Home / 4,985.15-6,878.41-2,888.06

Finding the Fourth Proportional to 4,985.15, 6,878.41 and 2,888.06

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Solution

The fourth proportional to 4,985.15, 6,878.41 and 2,888.06 is: 3,984.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.15 : 6,878.41 = 2,888.06 : x
  2. Step 2: Convert to fraction form
    4,985.15/6,878.41 = 2,888.06/x
  3. Step 3: Cross multiply
    4,985.15x = 6,878.41 × 2,888.06
  4. Step 4: Simplify right side
    4,985.15x = 19,865,270.76
  5. Step 5: Solve for x
    x = 19,865,270.76/4,985.15
  6. Step 6: Final answer
    x = 3,984.89

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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.