Home / 8,370.81-12,557.43-3,987.36

Finding the Fourth Proportional to 8,370.81, 12,557.43 and 3,987.36

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Solution

The fourth proportional to 8,370.81, 12,557.43 and 3,987.36 is: 5,981.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,370.81 : 12,557.43 = 3,987.36 : x
  2. Step 2: Convert to fraction form
    8,370.81/12,557.43 = 3,987.36/x
  3. Step 3: Cross multiply
    8,370.81x = 12,557.43 × 3,987.36
  4. Step 4: Simplify right side
    8,370.81x = 50,070,994.08
  5. Step 5: Solve for x
    x = 50,070,994.08/8,370.81
  6. Step 6: Final answer
    x = 5,981.62

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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.