Home / 2,453.19-3,385.36-1,390.93

Finding the Fourth Proportional to 2,453.19, 3,385.36 and 1,390.93

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Solution

The fourth proportional to 2,453.19, 3,385.36 and 1,390.93 is: 1,919.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,453.19 : 3,385.36 = 1,390.93 : x
  2. Step 2: Convert to fraction form
    2,453.19/3,385.36 = 1,390.93/x
  3. Step 3: Cross multiply
    2,453.19x = 3,385.36 × 1,390.93
  4. Step 4: Simplify right side
    2,453.19x = 4,708,798.78
  5. Step 5: Solve for x
    x = 4,708,798.78/2,453.19
  6. Step 6: Final answer
    x = 1,919.46

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1.5x scale

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.