Home / 1,357.60-2,036.40-1,343.20

Finding the Fourth Proportional to 1,357.60, 2,036.40 and 1,343.20

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Solution

The fourth proportional to 1,357.60, 2,036.40 and 1,343.20 is: 2,014.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,357.60 : 2,036.40 = 1,343.20 : x
  2. Step 2: Convert to fraction form
    1,357.60/2,036.40 = 1,343.20/x
  3. Step 3: Cross multiply
    1,357.60x = 2,036.40 × 1,343.20
  4. Step 4: Simplify right side
    1,357.60x = 2,735,292.48
  5. Step 5: Solve for x
    x = 2,735,292.48/1,357.60
  6. Step 6: Final answer
    x = 2,014.80

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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.