Home / 2,115.90-2,920.77-1,527.23

Finding the Fourth Proportional to 2,115.90, 2,920.77 and 1,527.23

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Solution

The fourth proportional to 2,115.90, 2,920.77 and 1,527.23 is: 2,108.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.90 : 2,920.77 = 1,527.23 : x
  2. Step 2: Convert to fraction form
    2,115.90/2,920.77 = 1,527.23/x
  3. Step 3: Cross multiply
    2,115.90x = 2,920.77 × 1,527.23
  4. Step 4: Simplify right side
    2,115.90x = 4,460,672.96
  5. Step 5: Solve for x
    x = 4,460,672.96/2,115.90
  6. Step 6: Final answer
    x = 2,108.17

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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.