Home / 2,586.90-3,569.86-1,408

Finding the Fourth Proportional to 2,586.90, 3,569.86 and 1,408

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Solution

The fourth proportional to 2,586.90, 3,569.86 and 1,408 is: 1,943.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,586.90 : 3,569.86 = 1,408 : x
  2. Step 2: Convert to fraction form
    2,586.90/3,569.86 = 1,408/x
  3. Step 3: Cross multiply
    2,586.90x = 3,569.86 × 1,408
  4. Step 4: Simplify right side
    2,586.90x = 5,026,362.88
  5. Step 5: Solve for x
    x = 5,026,362.88/2,586.90
  6. Step 6: Final answer
    x = 1,943.01

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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.