Home / 3,420.06-5,130.18-1,640.76

Finding the Fourth Proportional to 3,420.06, 5,130.18 and 1,640.76

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Solution

The fourth proportional to 3,420.06, 5,130.18 and 1,640.76 is: 2,461.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.06 : 5,130.18 = 1,640.76 : x
  2. Step 2: Convert to fraction form
    3,420.06/5,130.18 = 1,640.76/x
  3. Step 3: Cross multiply
    3,420.06x = 5,130.18 × 1,640.76
  4. Step 4: Simplify right side
    3,420.06x = 8,417,394.14
  5. Step 5: Solve for x
    x = 8,417,394.14/3,420.06
  6. Step 6: Final answer
    x = 2,461.18

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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.