Home / 2,782.95-3,836.01-1,886.40

Finding the Fourth Proportional to 2,782.95, 3,836.01 and 1,886.40

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Solution

The fourth proportional to 2,782.95, 3,836.01 and 1,886.40 is: 2,600.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.95 : 3,836.01 = 1,886.40 : x
  2. Step 2: Convert to fraction form
    2,782.95/3,836.01 = 1,886.40/x
  3. Step 3: Cross multiply
    2,782.95x = 3,836.01 × 1,886.40
  4. Step 4: Simplify right side
    2,782.95x = 7,236,249.26
  5. Step 5: Solve for x
    x = 7,236,249.26/2,782.95
  6. Step 6: Final answer
    x = 2,600.21

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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.