Home / 2,920.45-4,030.89-1,925.90

Finding the Fourth Proportional to 2,920.45, 4,030.89 and 1,925.90

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Solution

The fourth proportional to 2,920.45, 4,030.89 and 1,925.90 is: 2,658.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.45 : 4,030.89 = 1,925.90 : x
  2. Step 2: Convert to fraction form
    2,920.45/4,030.89 = 1,925.90/x
  3. Step 3: Cross multiply
    2,920.45x = 4,030.89 × 1,925.90
  4. Step 4: Simplify right side
    2,920.45x = 7,763,091.05
  5. Step 5: Solve for x
    x = 7,763,091.05/2,920.45
  6. Step 6: Final answer
    x = 2,658.18

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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.