Home / 1,323.48-1,985.70-1,186.20

Finding the Fourth Proportional to 1,323.48, 1,985.70 and 1,186.20

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Solution

The fourth proportional to 1,323.48, 1,985.70 and 1,186.20 is: 1,779.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.48 : 1,985.70 = 1,186.20 : x
  2. Step 2: Convert to fraction form
    1,323.48/1,985.70 = 1,186.20/x
  3. Step 3: Cross multiply
    1,323.48x = 1,985.70 × 1,186.20
  4. Step 4: Simplify right side
    1,323.48x = 2,355,437.34
  5. Step 5: Solve for x
    x = 2,355,437.34/1,323.48
  6. Step 6: Final answer
    x = 1,779.73

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1.5x scale

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.