Home / 2,445.40-3,665.70-2,186.20

Finding the Fourth Proportional to 2,445.40, 3,665.70 and 2,186.20

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Solution

The fourth proportional to 2,445.40, 3,665.70 and 2,186.20 is: 3,277.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,445.40 : 3,665.70 = 2,186.20 : x
  2. Step 2: Convert to fraction form
    2,445.40/3,665.70 = 2,186.20/x
  3. Step 3: Cross multiply
    2,445.40x = 3,665.70 × 2,186.20
  4. Step 4: Simplify right side
    2,445.40x = 8,013,953.34
  5. Step 5: Solve for x
    x = 8,013,953.34/2,445.40
  6. Step 6: Final answer
    x = 3,277.15

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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.