Home / 1,152.20-1,728.30-923.93

Finding the Fourth Proportional to 1,152.20, 1,728.30 and 923.93

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Solution

The fourth proportional to 1,152.20, 1,728.30 and 923.93 is: 1,385.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152.20 : 1,728.30 = 923.93 : x
  2. Step 2: Convert to fraction form
    1,152.20/1,728.30 = 923.93/x
  3. Step 3: Cross multiply
    1,152.20x = 1,728.30 × 923.93
  4. Step 4: Simplify right side
    1,152.20x = 1,596,828.22
  5. Step 5: Solve for x
    x = 1,596,828.22/1,152.20
  6. Step 6: Final answer
    x = 1,385.90

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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.