Home / 3,613.61-5,421.51-1,715.39

Finding the Fourth Proportional to 3,613.61, 5,421.51 and 1,715.39

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Solution

The fourth proportional to 3,613.61, 5,421.51 and 1,715.39 is: 2,573.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.61 : 5,421.51 = 1,715.39 : x
  2. Step 2: Convert to fraction form
    3,613.61/5,421.51 = 1,715.39/x
  3. Step 3: Cross multiply
    3,613.61x = 5,421.51 × 1,715.39
  4. Step 4: Simplify right side
    3,613.61x = 9,299,995.12
  5. Step 5: Solve for x
    x = 9,299,995.12/3,613.61
  6. Step 6: Final answer
    x = 2,573.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.