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Finding the Fourth Proportional to 4,985.04, 6,878.76 and 2,860.46

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Solution

The fourth proportional to 4,985.04, 6,878.76 and 2,860.46 is: 3,947.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.04 : 6,878.76 = 2,860.46 : x
  2. Step 2: Convert to fraction form
    4,985.04/6,878.76 = 2,860.46/x
  3. Step 3: Cross multiply
    4,985.04x = 6,878.76 × 2,860.46
  4. Step 4: Simplify right side
    4,985.04x = 19,676,417.83
  5. Step 5: Solve for x
    x = 19,676,417.83/4,985.04
  6. Step 6: Final answer
    x = 3,947.09

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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.