Home / 1,712.40-2,562.20-1,558.80

Finding the Fourth Proportional to 1,712.40, 2,562.20 and 1,558.80

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Solution

The fourth proportional to 1,712.40, 2,562.20 and 1,558.80 is: 2,332.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,712.40 : 2,562.20 = 1,558.80 : x
  2. Step 2: Convert to fraction form
    1,712.40/2,562.20 = 1,558.80/x
  3. Step 3: Cross multiply
    1,712.40x = 2,562.20 × 1,558.80
  4. Step 4: Simplify right side
    1,712.40x = 3,993,957.36
  5. Step 5: Solve for x
    x = 3,993,957.36/1,712.40
  6. Step 6: Final answer
    x = 2,332.37

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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.