Home / 3,123.37-4,681.77-1,478.71

Finding the Fourth Proportional to 3,123.37, 4,681.77 and 1,478.71

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Solution

The fourth proportional to 3,123.37, 4,681.77 and 1,478.71 is: 2,216.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.37 : 4,681.77 = 1,478.71 : x
  2. Step 2: Convert to fraction form
    3,123.37/4,681.77 = 1,478.71/x
  3. Step 3: Cross multiply
    3,123.37x = 4,681.77 × 1,478.71
  4. Step 4: Simplify right side
    3,123.37x = 6,922,980.12
  5. Step 5: Solve for x
    x = 6,922,980.12/3,123.37
  6. Step 6: Final answer
    x = 2,216.51

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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.