Home / 2,970.64-4,455.45-1,121.77

Finding the Fourth Proportional to 2,970.64, 4,455.45 and 1,121.77

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Solution

The fourth proportional to 2,970.64, 4,455.45 and 1,121.77 is: 1,682.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,970.64 : 4,455.45 = 1,121.77 : x
  2. Step 2: Convert to fraction form
    2,970.64/4,455.45 = 1,121.77/x
  3. Step 3: Cross multiply
    2,970.64x = 4,455.45 × 1,121.77
  4. Step 4: Simplify right side
    2,970.64x = 4,997,990.15
  5. Step 5: Solve for x
    x = 4,997,990.15/2,970.64
  6. Step 6: Final answer
    x = 1,682.46

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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.