Home / 1,663.15-2,295.16-917.07

Finding the Fourth Proportional to 1,663.15, 2,295.16 and 917.07

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Solution

The fourth proportional to 1,663.15, 2,295.16 and 917.07 is: 1,265.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,663.15 : 2,295.16 = 917.07 : x
  2. Step 2: Convert to fraction form
    1,663.15/2,295.16 = 917.07/x
  3. Step 3: Cross multiply
    1,663.15x = 2,295.16 × 917.07
  4. Step 4: Simplify right side
    1,663.15x = 2,104,822.38
  5. Step 5: Solve for x
    x = 2,104,822.38/1,663.15
  6. Step 6: Final answer
    x = 1,265.56

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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.