Home / 3,645.26-5,030.70-2,152.78

Finding the Fourth Proportional to 3,645.26, 5,030.70 and 2,152.78

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Solution

The fourth proportional to 3,645.26, 5,030.70 and 2,152.78 is: 2,970.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,645.26 : 5,030.70 = 2,152.78 : x
  2. Step 2: Convert to fraction form
    3,645.26/5,030.70 = 2,152.78/x
  3. Step 3: Cross multiply
    3,645.26x = 5,030.70 × 2,152.78
  4. Step 4: Simplify right side
    3,645.26x = 10,829,990.35
  5. Step 5: Solve for x
    x = 10,829,990.35/3,645.26
  6. Step 6: Final answer
    x = 2,970.98

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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.