Home / 2,453.63-3,385.95-1,405.76

Finding the Fourth Proportional to 2,453.63, 3,385.95 and 1,405.76

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Solution

The fourth proportional to 2,453.63, 3,385.95 and 1,405.76 is: 1,939.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,453.63 : 3,385.95 = 1,405.76 : x
  2. Step 2: Convert to fraction form
    2,453.63/3,385.95 = 1,405.76/x
  3. Step 3: Cross multiply
    2,453.63x = 3,385.95 × 1,405.76
  4. Step 4: Simplify right side
    2,453.63x = 4,759,833.07
  5. Step 5: Solve for x
    x = 4,759,833.07/2,453.63
  6. Step 6: Final answer
    x = 1,939.91

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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.