Home / 2,985.26-4,118.85-1,806.30

Finding the Fourth Proportional to 2,985.26, 4,118.85 and 1,806.30

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Solution

The fourth proportional to 2,985.26, 4,118.85 and 1,806.30 is: 2,492.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.26 : 4,118.85 = 1,806.30 : x
  2. Step 2: Convert to fraction form
    2,985.26/4,118.85 = 1,806.30/x
  3. Step 3: Cross multiply
    2,985.26x = 4,118.85 × 1,806.30
  4. Step 4: Simplify right side
    2,985.26x = 7,439,878.76
  5. Step 5: Solve for x
    x = 7,439,878.76/2,985.26
  6. Step 6: Final answer
    x = 2,492.21

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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.