Home / 1,052.40-1,452.12-904.80

Finding the Fourth Proportional to 1,052.40, 1,452.12 and 904.80

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Solution

The fourth proportional to 1,052.40, 1,452.12 and 904.80 is: 1,248.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,052.40 : 1,452.12 = 904.80 : x
  2. Step 2: Convert to fraction form
    1,052.40/1,452.12 = 904.80/x
  3. Step 3: Cross multiply
    1,052.40x = 1,452.12 × 904.80
  4. Step 4: Simplify right side
    1,052.40x = 1,313,878.18
  5. Step 5: Solve for x
    x = 1,313,878.18/1,052.40
  6. Step 6: Final answer
    x = 1,248.46

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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.