Home / 2,890.13-4,335.08-1,640.70

Finding the Fourth Proportional to 2,890.13, 4,335.08 and 1,640.70

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Solution

The fourth proportional to 2,890.13, 4,335.08 and 1,640.70 is: 2,460.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.13 : 4,335.08 = 1,640.70 : x
  2. Step 2: Convert to fraction form
    2,890.13/4,335.08 = 1,640.70/x
  3. Step 3: Cross multiply
    2,890.13x = 4,335.08 × 1,640.70
  4. Step 4: Simplify right side
    2,890.13x = 7,112,557.55
  5. Step 5: Solve for x
    x = 7,112,557.55/2,890.13
  6. Step 6: Final answer
    x = 2,460.99

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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.