Home / 1,688.64-2,330.08-1,025.47

Finding the Fourth Proportional to 1,688.64, 2,330.08 and 1,025.47

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Solution

The fourth proportional to 1,688.64, 2,330.08 and 1,025.47 is: 1,415.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.64 : 2,330.08 = 1,025.47 : x
  2. Step 2: Convert to fraction form
    1,688.64/2,330.08 = 1,025.47/x
  3. Step 3: Cross multiply
    1,688.64x = 2,330.08 × 1,025.47
  4. Step 4: Simplify right side
    1,688.64x = 2,389,427.14
  5. Step 5: Solve for x
    x = 2,389,427.14/1,688.64
  6. Step 6: Final answer
    x = 1,415.00

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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.