Home / 2,645.10-3,639.06-2,572.20

Finding the Fourth Proportional to 2,645.10, 3,639.06 and 2,572.20

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Solution

The fourth proportional to 2,645.10, 3,639.06 and 2,572.20 is: 3,538.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,645.10 : 3,639.06 = 2,572.20 : x
  2. Step 2: Convert to fraction form
    2,645.10/3,639.06 = 2,572.20/x
  3. Step 3: Cross multiply
    2,645.10x = 3,639.06 × 2,572.20
  4. Step 4: Simplify right side
    2,645.10x = 9,360,390.13
  5. Step 5: Solve for x
    x = 9,360,390.13/2,645.10
  6. Step 6: Final answer
    x = 3,538.77

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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.