Home / 4,985.61-6,880.17-2,860.57

Finding the Fourth Proportional to 4,985.61, 6,880.17 and 2,860.57

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Solution

The fourth proportional to 4,985.61, 6,880.17 and 2,860.57 is: 3,947.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.61 : 6,880.17 = 2,860.57 : x
  2. Step 2: Convert to fraction form
    4,985.61/6,880.17 = 2,860.57/x
  3. Step 3: Cross multiply
    4,985.61x = 6,880.17 × 2,860.57
  4. Step 4: Simplify right side
    4,985.61x = 19,681,207.90
  5. Step 5: Solve for x
    x = 19,681,207.90/4,985.61
  6. Step 6: Final answer
    x = 3,947.60

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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.