Home / 1,658.19-2,285.37-1,378.47

Finding the Fourth Proportional to 1,658.19, 2,285.37 and 1,378.47

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Solution

The fourth proportional to 1,658.19, 2,285.37 and 1,378.47 is: 1,899.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,658.19 : 2,285.37 = 1,378.47 : x
  2. Step 2: Convert to fraction form
    1,658.19/2,285.37 = 1,378.47/x
  3. Step 3: Cross multiply
    1,658.19x = 2,285.37 × 1,378.47
  4. Step 4: Simplify right side
    1,658.19x = 3,150,313.98
  5. Step 5: Solve for x
    x = 3,150,313.98/1,658.19
  6. Step 6: Final answer
    x = 1,899.85

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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.