Home / 2,421.63-3,342.87-1,636.74

Finding the Fourth Proportional to 2,421.63, 3,342.87 and 1,636.74

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Solution

The fourth proportional to 2,421.63, 3,342.87 and 1,636.74 is: 2,259.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.63 : 3,342.87 = 1,636.74 : x
  2. Step 2: Convert to fraction form
    2,421.63/3,342.87 = 1,636.74/x
  3. Step 3: Cross multiply
    2,421.63x = 3,342.87 × 1,636.74
  4. Step 4: Simplify right side
    2,421.63x = 5,471,409.04
  5. Step 5: Solve for x
    x = 5,471,409.04/2,421.63
  6. Step 6: Final answer
    x = 2,259.39

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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.