Home / 2,938.76-4,054.02-2,151.08

Finding the Fourth Proportional to 2,938.76, 4,054.02 and 2,151.08

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Solution

The fourth proportional to 2,938.76, 4,054.02 and 2,151.08 is: 2,967.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.76 : 4,054.02 = 2,151.08 : x
  2. Step 2: Convert to fraction form
    2,938.76/4,054.02 = 2,151.08/x
  3. Step 3: Cross multiply
    2,938.76x = 4,054.02 × 2,151.08
  4. Step 4: Simplify right side
    2,938.76x = 8,720,521.34
  5. Step 5: Solve for x
    x = 8,720,521.34/2,938.76
  6. Step 6: Final answer
    x = 2,967.42

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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.