Home / 1,332.48-1,995.68-919.74

Finding the Fourth Proportional to 1,332.48, 1,995.68 and 919.74

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Solution

The fourth proportional to 1,332.48, 1,995.68 and 919.74 is: 1,377.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,332.48 : 1,995.68 = 919.74 : x
  2. Step 2: Convert to fraction form
    1,332.48/1,995.68 = 919.74/x
  3. Step 3: Cross multiply
    1,332.48x = 1,995.68 × 919.74
  4. Step 4: Simplify right side
    1,332.48x = 1,835,506.72
  5. Step 5: Solve for x
    x = 1,835,506.72/1,332.48
  6. Step 6: Final answer
    x = 1,377.51

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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.