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Finding the Fourth Proportional to 4,752.77, 7,129.55 and 1,242.77

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Solution

The fourth proportional to 4,752.77, 7,129.55 and 1,242.77 is: 1,864.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,752.77 : 7,129.55 = 1,242.77 : x
  2. Step 2: Convert to fraction form
    4,752.77/7,129.55 = 1,242.77/x
  3. Step 3: Cross multiply
    4,752.77x = 7,129.55 × 1,242.77
  4. Step 4: Simplify right side
    4,752.77x = 8,860,348.99
  5. Step 5: Solve for x
    x = 8,860,348.99/4,752.77
  6. Step 6: Final answer
    x = 1,864.25

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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.