Home / 1,585.21-2,188.10-1,113.22

Finding the Fourth Proportional to 1,585.21, 2,188.10 and 1,113.22

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Solution

The fourth proportional to 1,585.21, 2,188.10 and 1,113.22 is: 1,536.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,585.21 : 2,188.10 = 1,113.22 : x
  2. Step 2: Convert to fraction form
    1,585.21/2,188.10 = 1,113.22/x
  3. Step 3: Cross multiply
    1,585.21x = 2,188.10 × 1,113.22
  4. Step 4: Simplify right side
    1,585.21x = 2,435,842.85
  5. Step 5: Solve for x
    x = 2,435,842.85/1,585.21
  6. Step 6: Final answer
    x = 1,536.60

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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.