Home / 7,925.64-11,878.29-2,989.40

Finding the Fourth Proportional to 7,925.64, 11,878.29 and 2,989.40

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Solution

The fourth proportional to 7,925.64, 11,878.29 and 2,989.40 is: 4,480.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,925.64 : 11,878.29 = 2,989.40 : x
  2. Step 2: Convert to fraction form
    7,925.64/11,878.29 = 2,989.40/x
  3. Step 3: Cross multiply
    7,925.64x = 11,878.29 × 2,989.40
  4. Step 4: Simplify right side
    7,925.64x = 35,508,945.18
  5. Step 5: Solve for x
    x = 35,508,945.18/7,925.64
  6. Step 6: Final answer
    x = 4,480.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.