Home / 1,698.96-2,345.38-1,320

Finding the Fourth Proportional to 1,698.96, 2,345.38 and 1,320

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Solution

The fourth proportional to 1,698.96, 2,345.38 and 1,320 is: 1,822.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,698.96 : 2,345.38 = 1,320 : x
  2. Step 2: Convert to fraction form
    1,698.96/2,345.38 = 1,320/x
  3. Step 3: Cross multiply
    1,698.96x = 2,345.38 × 1,320
  4. Step 4: Simplify right side
    1,698.96x = 3,095,901.60
  5. Step 5: Solve for x
    x = 3,095,901.60/1,698.96
  6. Step 6: Final answer
    x = 1,822.23

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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.