Home / 4,242.64-6,364.80-1,320.82

Finding the Fourth Proportional to 4,242.64, 6,364.80 and 1,320.82

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Solution

The fourth proportional to 4,242.64, 6,364.80 and 1,320.82 is: 1,981.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,242.64 : 6,364.80 = 1,320.82 : x
  2. Step 2: Convert to fraction form
    4,242.64/6,364.80 = 1,320.82/x
  3. Step 3: Cross multiply
    4,242.64x = 6,364.80 × 1,320.82
  4. Step 4: Simplify right side
    4,242.64x = 8,406,755.14
  5. Step 5: Solve for x
    x = 8,406,755.14/4,242.64
  6. Step 6: Final answer
    x = 1,981.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.