Home / 2,511.51-3,465.91-1,392.57

Finding the Fourth Proportional to 2,511.51, 3,465.91 and 1,392.57

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Solution

The fourth proportional to 2,511.51, 3,465.91 and 1,392.57 is: 1,921.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,511.51 : 3,465.91 = 1,392.57 : x
  2. Step 2: Convert to fraction form
    2,511.51/3,465.91 = 1,392.57/x
  3. Step 3: Cross multiply
    2,511.51x = 3,465.91 × 1,392.57
  4. Step 4: Simplify right side
    2,511.51x = 4,826,518.20
  5. Step 5: Solve for x
    x = 4,826,518.20/2,511.51
  6. Step 6: Final answer
    x = 1,921.76

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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.