Home / 2,156.64-2,975.18-1,316.68

Finding the Fourth Proportional to 2,156.64, 2,975.18 and 1,316.68

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Solution

The fourth proportional to 2,156.64, 2,975.18 and 1,316.68 is: 1,816.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.64 : 2,975.18 = 1,316.68 : x
  2. Step 2: Convert to fraction form
    2,156.64/2,975.18 = 1,316.68/x
  3. Step 3: Cross multiply
    2,156.64x = 2,975.18 × 1,316.68
  4. Step 4: Simplify right side
    2,156.64x = 3,917,360.00
  5. Step 5: Solve for x
    x = 3,917,360.00/2,156.64
  6. Step 6: Final answer
    x = 1,816.42

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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.