Home / 1,686.04-2,529.60-646.36

Finding the Fourth Proportional to 1,686.04, 2,529.60 and 646.36

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Solution

The fourth proportional to 1,686.04, 2,529.60 and 646.36 is: 969.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686.04 : 2,529.60 = 646.36 : x
  2. Step 2: Convert to fraction form
    1,686.04/2,529.60 = 646.36/x
  3. Step 3: Cross multiply
    1,686.04x = 2,529.60 × 646.36
  4. Step 4: Simplify right side
    1,686.04x = 1,635,032.26
  5. Step 5: Solve for x
    x = 1,635,032.26/1,686.04
  6. Step 6: Final answer
    x = 969.75

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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.