Home / 2,415.60-3,332.74-1,421.22

Finding the Fourth Proportional to 2,415.60, 3,332.74 and 1,421.22

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Solution

The fourth proportional to 2,415.60, 3,332.74 and 1,421.22 is: 1,960.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,415.60 : 3,332.74 = 1,421.22 : x
  2. Step 2: Convert to fraction form
    2,415.60/3,332.74 = 1,421.22/x
  3. Step 3: Cross multiply
    2,415.60x = 3,332.74 × 1,421.22
  4. Step 4: Simplify right side
    2,415.60x = 4,736,556.74
  5. Step 5: Solve for x
    x = 4,736,556.74/2,415.60
  6. Step 6: Final answer
    x = 1,960.82

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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.