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Finding the Fourth Proportional to 4,256.99, 6,385.48 and 1,178.99

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Solution

The fourth proportional to 4,256.99, 6,385.48 and 1,178.99 is: 1,768.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,256.99 : 6,385.48 = 1,178.99 : x
  2. Step 2: Convert to fraction form
    4,256.99/6,385.48 = 1,178.99/x
  3. Step 3: Cross multiply
    4,256.99x = 6,385.48 × 1,178.99
  4. Step 4: Simplify right side
    4,256.99x = 7,528,385.14
  5. Step 5: Solve for x
    x = 7,528,385.14/4,256.99
  6. Step 6: Final answer
    x = 1,768.48

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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.