Home / 2,688.48-4,032.80-1,045.40

Finding the Fourth Proportional to 2,688.48, 4,032.80 and 1,045.40

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Solution

The fourth proportional to 2,688.48, 4,032.80 and 1,045.40 is: 1,568.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.48 : 4,032.80 = 1,045.40 : x
  2. Step 2: Convert to fraction form
    2,688.48/4,032.80 = 1,045.40/x
  3. Step 3: Cross multiply
    2,688.48x = 4,032.80 × 1,045.40
  4. Step 4: Simplify right side
    2,688.48x = 4,215,889.12
  5. Step 5: Solve for x
    x = 4,215,889.12/2,688.48
  6. Step 6: Final answer
    x = 1,568.13

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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.