Home / 1,688.68-2,328.51-1,295.02

Finding the Fourth Proportional to 1,688.68, 2,328.51 and 1,295.02

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Solution

The fourth proportional to 1,688.68, 2,328.51 and 1,295.02 is: 1,785.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.68 : 2,328.51 = 1,295.02 : x
  2. Step 2: Convert to fraction form
    1,688.68/2,328.51 = 1,295.02/x
  3. Step 3: Cross multiply
    1,688.68x = 2,328.51 × 1,295.02
  4. Step 4: Simplify right side
    1,688.68x = 3,015,467.02
  5. Step 5: Solve for x
    x = 3,015,467.02/1,688.68
  6. Step 6: Final answer
    x = 1,785.69

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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.