Home / 8,686.87-13,030.18-2,113.07

Finding the Fourth Proportional to 8,686.87, 13,030.18 and 2,113.07

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Solution

The fourth proportional to 8,686.87, 13,030.18 and 2,113.07 is: 3,169.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.87 : 13,030.18 = 2,113.07 : x
  2. Step 2: Convert to fraction form
    8,686.87/13,030.18 = 2,113.07/x
  3. Step 3: Cross multiply
    8,686.87x = 13,030.18 × 2,113.07
  4. Step 4: Simplify right side
    8,686.87x = 27,533,612.02
  5. Step 5: Solve for x
    x = 27,533,612.02/8,686.87
  6. Step 6: Final answer
    x = 3,169.57

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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.