Home / 1,688.24-2,328.19-1,120.07

Finding the Fourth Proportional to 1,688.24, 2,328.19 and 1,120.07

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Solution

The fourth proportional to 1,688.24, 2,328.19 and 1,120.07 is: 1,544.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.24 : 2,328.19 = 1,120.07 : x
  2. Step 2: Convert to fraction form
    1,688.24/2,328.19 = 1,120.07/x
  3. Step 3: Cross multiply
    1,688.24x = 2,328.19 × 1,120.07
  4. Step 4: Simplify right side
    1,688.24x = 2,607,735.77
  5. Step 5: Solve for x
    x = 2,607,735.77/1,688.24
  6. Step 6: Final answer
    x = 1,544.65

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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.