Home / 2,903.42-4,001.32-2,156.20

Finding the Fourth Proportional to 2,903.42, 4,001.32 and 2,156.20

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Solution

The fourth proportional to 2,903.42, 4,001.32 and 2,156.20 is: 2,971.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,903.42 : 4,001.32 = 2,156.20 : x
  2. Step 2: Convert to fraction form
    2,903.42/4,001.32 = 2,156.20/x
  3. Step 3: Cross multiply
    2,903.42x = 4,001.32 × 2,156.20
  4. Step 4: Simplify right side
    2,903.42x = 8,627,646.18
  5. Step 5: Solve for x
    x = 8,627,646.18/2,903.42
  6. Step 6: Final answer
    x = 2,971.55

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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.