Home / 2,511.51-3,465.84-1,392.45

Finding the Fourth Proportional to 2,511.51, 3,465.84 and 1,392.45

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Solution

The fourth proportional to 2,511.51, 3,465.84 and 1,392.45 is: 1,921.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,511.51 : 3,465.84 = 1,392.45 : x
  2. Step 2: Convert to fraction form
    2,511.51/3,465.84 = 1,392.45/x
  3. Step 3: Cross multiply
    2,511.51x = 3,465.84 × 1,392.45
  4. Step 4: Simplify right side
    2,511.51x = 4,826,008.91
  5. Step 5: Solve for x
    x = 4,826,008.91/2,511.51
  6. Step 6: Final answer
    x = 1,921.56

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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.