Home / 4,291.62-6,435.81-1,981.50

Finding the Fourth Proportional to 4,291.62, 6,435.81 and 1,981.50

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Solution

The fourth proportional to 4,291.62, 6,435.81 and 1,981.50 is: 2,971.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,291.62 : 6,435.81 = 1,981.50 : x
  2. Step 2: Convert to fraction form
    4,291.62/6,435.81 = 1,981.50/x
  3. Step 3: Cross multiply
    4,291.62x = 6,435.81 × 1,981.50
  4. Step 4: Simplify right side
    4,291.62x = 12,752,557.52
  5. Step 5: Solve for x
    x = 12,752,557.52/4,291.62
  6. Step 6: Final answer
    x = 2,971.50

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1.5x scale

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.