Home / 3,655.91-5,478.59-2,830.31

Finding the Fourth Proportional to 3,655.91, 5,478.59 and 2,830.31

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Solution

The fourth proportional to 3,655.91, 5,478.59 and 2,830.31 is: 4,241.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,655.91 : 5,478.59 = 2,830.31 : x
  2. Step 2: Convert to fraction form
    3,655.91/5,478.59 = 2,830.31/x
  3. Step 3: Cross multiply
    3,655.91x = 5,478.59 × 2,830.31
  4. Step 4: Simplify right side
    3,655.91x = 15,506,128.84
  5. Step 5: Solve for x
    x = 15,506,128.84/3,655.91
  6. Step 6: Final answer
    x = 4,241.39

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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.