Home / 2,415.30-3,332.85-1,420.89

Finding the Fourth Proportional to 2,415.30, 3,332.85 and 1,420.89

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Solution

The fourth proportional to 2,415.30, 3,332.85 and 1,420.89 is: 1,960.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,415.30 : 3,332.85 = 1,420.89 : x
  2. Step 2: Convert to fraction form
    2,415.30/3,332.85 = 1,420.89/x
  3. Step 3: Cross multiply
    2,415.30x = 3,332.85 × 1,420.89
  4. Step 4: Simplify right side
    2,415.30x = 4,735,613.24
  5. Step 5: Solve for x
    x = 4,735,613.24/2,415.30
  6. Step 6: Final answer
    x = 1,960.67

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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.