Home / 2,291.08-3,430.08-2,145.77

Finding the Fourth Proportional to 2,291.08, 3,430.08 and 2,145.77

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Solution

The fourth proportional to 2,291.08, 3,430.08 and 2,145.77 is: 3,212.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.08 : 3,430.08 = 2,145.77 : x
  2. Step 2: Convert to fraction form
    2,291.08/3,430.08 = 2,145.77/x
  3. Step 3: Cross multiply
    2,291.08x = 3,430.08 × 2,145.77
  4. Step 4: Simplify right side
    2,291.08x = 7,360,162.76
  5. Step 5: Solve for x
    x = 7,360,162.76/2,291.08
  6. Step 6: Final answer
    x = 3,212.53

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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.