Home / 3,613.99-4,985.51-2,815.89

Finding the Fourth Proportional to 3,613.99, 4,985.51 and 2,815.89

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Solution

The fourth proportional to 3,613.99, 4,985.51 and 2,815.89 is: 3,884.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.99 : 4,985.51 = 2,815.89 : x
  2. Step 2: Convert to fraction form
    3,613.99/4,985.51 = 2,815.89/x
  3. Step 3: Cross multiply
    3,613.99x = 4,985.51 × 2,815.89
  4. Step 4: Simplify right side
    3,613.99x = 14,038,647.75
  5. Step 5: Solve for x
    x = 14,038,647.75/3,613.99
  6. Step 6: Final answer
    x = 3,884.53

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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.