Home / 2,925-4,038.66-2,140.20

Finding the Fourth Proportional to 2,925, 4,038.66 and 2,140.20

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Solution

The fourth proportional to 2,925, 4,038.66 and 2,140.20 is: 2,955.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,925 : 4,038.66 = 2,140.20 : x
  2. Step 2: Convert to fraction form
    2,925/4,038.66 = 2,140.20/x
  3. Step 3: Cross multiply
    2,925x = 4,038.66 × 2,140.20
  4. Step 4: Simplify right side
    2,925x = 8,643,540.13
  5. Step 5: Solve for x
    x = 8,643,540.13/2,925
  6. Step 6: Final answer
    x = 2,955.06

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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.