Home / 1,478.80-2,037.26-1,225.77

Finding the Fourth Proportional to 1,478.80, 2,037.26 and 1,225.77

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Solution

The fourth proportional to 1,478.80, 2,037.26 and 1,225.77 is: 1,688.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478.80 : 2,037.26 = 1,225.77 : x
  2. Step 2: Convert to fraction form
    1,478.80/2,037.26 = 1,225.77/x
  3. Step 3: Cross multiply
    1,478.80x = 2,037.26 × 1,225.77
  4. Step 4: Simplify right side
    1,478.80x = 2,497,214.22
  5. Step 5: Solve for x
    x = 2,497,214.22/1,478.80
  6. Step 6: Final answer
    x = 1,688.68

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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.