Home / 1,403.08-2,103.28-525.35

Finding the Fourth Proportional to 1,403.08, 2,103.28 and 525.35

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Solution

The fourth proportional to 1,403.08, 2,103.28 and 525.35 is: 787.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,403.08 : 2,103.28 = 525.35 : x
  2. Step 2: Convert to fraction form
    1,403.08/2,103.28 = 525.35/x
  3. Step 3: Cross multiply
    1,403.08x = 2,103.28 × 525.35
  4. Step 4: Simplify right side
    1,403.08x = 1,104,962.09
  5. Step 5: Solve for x
    x = 1,104,962.09/1,403.08
  6. Step 6: Final answer
    x = 787.53

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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.