Home / 2,985.14-4,120.60-2,563.80

Finding the Fourth Proportional to 2,985.14, 4,120.60 and 2,563.80

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Solution

The fourth proportional to 2,985.14, 4,120.60 and 2,563.80 is: 3,538.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.14 : 4,120.60 = 2,563.80 : x
  2. Step 2: Convert to fraction form
    2,985.14/4,120.60 = 2,563.80/x
  3. Step 3: Cross multiply
    2,985.14x = 4,120.60 × 2,563.80
  4. Step 4: Simplify right side
    2,985.14x = 10,564,394.28
  5. Step 5: Solve for x
    x = 10,564,394.28/2,985.14
  6. Step 6: Final answer
    x = 3,538.99

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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.