Home / 2,166.63-2,986.76-1,535.21

Finding the Fourth Proportional to 2,166.63, 2,986.76 and 1,535.21

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Solution

The fourth proportional to 2,166.63, 2,986.76 and 1,535.21 is: 2,116.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166.63 : 2,986.76 = 1,535.21 : x
  2. Step 2: Convert to fraction form
    2,166.63/2,986.76 = 1,535.21/x
  3. Step 3: Cross multiply
    2,166.63x = 2,986.76 × 1,535.21
  4. Step 4: Simplify right side
    2,166.63x = 4,585,281.21
  5. Step 5: Solve for x
    x = 4,585,281.21/2,166.63
  6. Step 6: Final answer
    x = 2,116.32

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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.