Home / 2,870.48-3,935.46-2,818.64

Finding the Fourth Proportional to 2,870.48, 3,935.46 and 2,818.64

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Solution

The fourth proportional to 2,870.48, 3,935.46 and 2,818.64 is: 3,864.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,870.48 : 3,935.46 = 2,818.64 : x
  2. Step 2: Convert to fraction form
    2,870.48/3,935.46 = 2,818.64/x
  3. Step 3: Cross multiply
    2,870.48x = 3,935.46 × 2,818.64
  4. Step 4: Simplify right side
    2,870.48x = 11,092,644.97
  5. Step 5: Solve for x
    x = 11,092,644.97/2,870.48
  6. Step 6: Final answer
    x = 3,864.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.