Home / 1,543.48-2,129.98-835.30

Finding the Fourth Proportional to 1,543.48, 2,129.98 and 835.30

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Solution

The fourth proportional to 1,543.48, 2,129.98 and 835.30 is: 1,152.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.48 : 2,129.98 = 835.30 : x
  2. Step 2: Convert to fraction form
    1,543.48/2,129.98 = 835.30/x
  3. Step 3: Cross multiply
    1,543.48x = 2,129.98 × 835.30
  4. Step 4: Simplify right side
    1,543.48x = 1,779,181.60
  5. Step 5: Solve for x
    x = 1,779,181.60/1,543.48
  6. Step 6: Final answer
    x = 1,152.71

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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.