Home / 2,120.40-2,925.06-1,373.40

Finding the Fourth Proportional to 2,120.40, 2,925.06 and 1,373.40

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Solution

The fourth proportional to 2,120.40, 2,925.06 and 1,373.40 is: 1,894.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.40 : 2,925.06 = 1,373.40 : x
  2. Step 2: Convert to fraction form
    2,120.40/2,925.06 = 1,373.40/x
  3. Step 3: Cross multiply
    2,120.40x = 2,925.06 × 1,373.40
  4. Step 4: Simplify right side
    2,120.40x = 4,017,277.40
  5. Step 5: Solve for x
    x = 4,017,277.40/2,120.40
  6. Step 6: Final answer
    x = 1,894.58

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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.