Home / 3,307.50-4,564.40-1,815.55

Finding the Fourth Proportional to 3,307.50, 4,564.40 and 1,815.55

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Solution

The fourth proportional to 3,307.50, 4,564.40 and 1,815.55 is: 2,505.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,307.50 : 4,564.40 = 1,815.55 : x
  2. Step 2: Convert to fraction form
    3,307.50/4,564.40 = 1,815.55/x
  3. Step 3: Cross multiply
    3,307.50x = 4,564.40 × 1,815.55
  4. Step 4: Simplify right side
    3,307.50x = 8,286,887.34
  5. Step 5: Solve for x
    x = 8,286,887.34/3,307.50
  6. Step 6: Final answer
    x = 2,505.49

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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.