Home / 2,816.42-3,886.51-1,557.40

Finding the Fourth Proportional to 2,816.42, 3,886.51 and 1,557.40

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Solution

The fourth proportional to 2,816.42, 3,886.51 and 1,557.40 is: 2,149.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.42 : 3,886.51 = 1,557.40 : x
  2. Step 2: Convert to fraction form
    2,816.42/3,886.51 = 1,557.40/x
  3. Step 3: Cross multiply
    2,816.42x = 3,886.51 × 1,557.40
  4. Step 4: Simplify right side
    2,816.42x = 6,052,848.72
  5. Step 5: Solve for x
    x = 6,052,848.72/2,816.42
  6. Step 6: Final answer
    x = 2,149.13

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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.