Home / 1,663.58-2,295.89-917.63

Finding the Fourth Proportional to 1,663.58, 2,295.89 and 917.63

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Solution

The fourth proportional to 1,663.58, 2,295.89 and 917.63 is: 1,266.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,663.58 : 2,295.89 = 917.63 : x
  2. Step 2: Convert to fraction form
    1,663.58/2,295.89 = 917.63/x
  3. Step 3: Cross multiply
    1,663.58x = 2,295.89 × 917.63
  4. Step 4: Simplify right side
    1,663.58x = 2,106,761.47
  5. Step 5: Solve for x
    x = 2,106,761.47/1,663.58
  6. Step 6: Final answer
    x = 1,266.40

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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.