Home / 2,421.99-3,343.95-2,159.55

Finding the Fourth Proportional to 2,421.99, 3,343.95 and 2,159.55

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Solution

The fourth proportional to 2,421.99, 3,343.95 and 2,159.55 is: 2,981.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.99 : 3,343.95 = 2,159.55 : x
  2. Step 2: Convert to fraction form
    2,421.99/3,343.95 = 2,159.55/x
  3. Step 3: Cross multiply
    2,421.99x = 3,343.95 × 2,159.55
  4. Step 4: Simplify right side
    2,421.99x = 7,221,427.22
  5. Step 5: Solve for x
    x = 7,221,427.22/2,421.99
  6. Step 6: Final answer
    x = 2,981.61

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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.