Home / 2,612.10-3,911.70-1,830.21

Finding the Fourth Proportional to 2,612.10, 3,911.70 and 1,830.21

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Solution

The fourth proportional to 2,612.10, 3,911.70 and 1,830.21 is: 2,740.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,612.10 : 3,911.70 = 1,830.21 : x
  2. Step 2: Convert to fraction form
    2,612.10/3,911.70 = 1,830.21/x
  3. Step 3: Cross multiply
    2,612.10x = 3,911.70 × 1,830.21
  4. Step 4: Simplify right side
    2,612.10x = 7,159,232.46
  5. Step 5: Solve for x
    x = 7,159,232.46/2,612.10
  6. Step 6: Final answer
    x = 2,740.80

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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.