Home / 1,688.18-2,330.39-1,025.24

Finding the Fourth Proportional to 1,688.18, 2,330.39 and 1,025.24

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Solution

The fourth proportional to 1,688.18, 2,330.39 and 1,025.24 is: 1,415.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.18 : 2,330.39 = 1,025.24 : x
  2. Step 2: Convert to fraction form
    1,688.18/2,330.39 = 1,025.24/x
  3. Step 3: Cross multiply
    1,688.18x = 2,330.39 × 1,025.24
  4. Step 4: Simplify right side
    1,688.18x = 2,389,192.27
  5. Step 5: Solve for x
    x = 2,389,192.27/1,688.18
  6. Step 6: Final answer
    x = 1,415.25

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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.