Home / 2,658.48-3,984.28-1,360.40

Finding the Fourth Proportional to 2,658.48, 3,984.28 and 1,360.40

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Solution

The fourth proportional to 2,658.48, 3,984.28 and 1,360.40 is: 2,038.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,658.48 : 3,984.28 = 1,360.40 : x
  2. Step 2: Convert to fraction form
    2,658.48/3,984.28 = 1,360.40/x
  3. Step 3: Cross multiply
    2,658.48x = 3,984.28 × 1,360.40
  4. Step 4: Simplify right side
    2,658.48x = 5,420,214.51
  5. Step 5: Solve for x
    x = 5,420,214.51/2,658.48
  6. Step 6: Final answer
    x = 2,038.84

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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.