Home / 2,420.30-3,340.04-1,580.51

Finding the Fourth Proportional to 2,420.30, 3,340.04 and 1,580.51

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Solution

The fourth proportional to 2,420.30, 3,340.04 and 1,580.51 is: 2,181.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.30 : 3,340.04 = 1,580.51 : x
  2. Step 2: Convert to fraction form
    2,420.30/3,340.04 = 1,580.51/x
  3. Step 3: Cross multiply
    2,420.30x = 3,340.04 × 1,580.51
  4. Step 4: Simplify right side
    2,420.30x = 5,278,953.87
  5. Step 5: Solve for x
    x = 5,278,953.87/2,420.30
  6. Step 6: Final answer
    x = 2,181.11

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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.