Home / 1,663.36-2,295.32-917.32

Finding the Fourth Proportional to 1,663.36, 2,295.32 and 917.32

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Solution

The fourth proportional to 1,663.36, 2,295.32 and 917.32 is: 1,265.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,663.36 : 2,295.32 = 917.32 : x
  2. Step 2: Convert to fraction form
    1,663.36/2,295.32 = 917.32/x
  3. Step 3: Cross multiply
    1,663.36x = 2,295.32 × 917.32
  4. Step 4: Simplify right side
    1,663.36x = 2,105,545.52
  5. Step 5: Solve for x
    x = 2,105,545.52/1,663.36
  6. Step 6: Final answer
    x = 1,265.84

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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.