Home / 1,452.40-2,178.60-904.30

Finding the Fourth Proportional to 1,452.40, 2,178.60 and 904.30

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Solution

The fourth proportional to 1,452.40, 2,178.60 and 904.30 is: 1,356.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,452.40 : 2,178.60 = 904.30 : x
  2. Step 2: Convert to fraction form
    1,452.40/2,178.60 = 904.30/x
  3. Step 3: Cross multiply
    1,452.40x = 2,178.60 × 904.30
  4. Step 4: Simplify right side
    1,452.40x = 1,970,107.98
  5. Step 5: Solve for x
    x = 1,970,107.98/1,452.40
  6. Step 6: Final answer
    x = 1,356.45

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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.