Home / 2,816.15-3,886.27-1,574.15

Finding the Fourth Proportional to 2,816.15, 3,886.27 and 1,574.15

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Solution

The fourth proportional to 2,816.15, 3,886.27 and 1,574.15 is: 2,172.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.15 : 3,886.27 = 1,574.15 : x
  2. Step 2: Convert to fraction form
    2,816.15/3,886.27 = 1,574.15/x
  3. Step 3: Cross multiply
    2,816.15x = 3,886.27 × 1,574.15
  4. Step 4: Simplify right side
    2,816.15x = 6,117,564.05
  5. Step 5: Solve for x
    x = 6,117,564.05/2,816.15
  6. Step 6: Final answer
    x = 2,172.31

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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.