Home / 1,257.37-1,737.40-904.46

Finding the Fourth Proportional to 1,257.37, 1,737.40 and 904.46

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Solution

The fourth proportional to 1,257.37, 1,737.40 and 904.46 is: 1,249.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257.37 : 1,737.40 = 904.46 : x
  2. Step 2: Convert to fraction form
    1,257.37/1,737.40 = 904.46/x
  3. Step 3: Cross multiply
    1,257.37x = 1,737.40 × 904.46
  4. Step 4: Simplify right side
    1,257.37x = 1,571,403.92
  5. Step 5: Solve for x
    x = 1,571,403.92/1,257.37
  6. Step 6: Final answer
    x = 1,249.76

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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.