Home / 2,415.35-3,333.98-1,420.58

Finding the Fourth Proportional to 2,415.35, 3,333.98 and 1,420.58

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Solution

The fourth proportional to 2,415.35, 3,333.98 and 1,420.58 is: 1,960.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,415.35 : 3,333.98 = 1,420.58 : x
  2. Step 2: Convert to fraction form
    2,415.35/3,333.98 = 1,420.58/x
  3. Step 3: Cross multiply
    2,415.35x = 3,333.98 × 1,420.58
  4. Step 4: Simplify right side
    2,415.35x = 4,736,178.21
  5. Step 5: Solve for x
    x = 4,736,178.21/2,415.35
  6. Step 6: Final answer
    x = 1,960.87

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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.