Home / 1,319.40-1,820.20-795.13

Finding the Fourth Proportional to 1,319.40, 1,820.20 and 795.13

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Solution

The fourth proportional to 1,319.40, 1,820.20 and 795.13 is: 1,096.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.40 : 1,820.20 = 795.13 : x
  2. Step 2: Convert to fraction form
    1,319.40/1,820.20 = 795.13/x
  3. Step 3: Cross multiply
    1,319.40x = 1,820.20 × 795.13
  4. Step 4: Simplify right side
    1,319.40x = 1,447,295.63
  5. Step 5: Solve for x
    x = 1,447,295.63/1,319.40
  6. Step 6: Final answer
    x = 1,096.93

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1.5x scale

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.