Home / 1,312.48-1,811.36-1,052.32

Finding the Fourth Proportional to 1,312.48, 1,811.36 and 1,052.32

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Solution

The fourth proportional to 1,312.48, 1,811.36 and 1,052.32 is: 1,452.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312.48 : 1,811.36 = 1,052.32 : x
  2. Step 2: Convert to fraction form
    1,312.48/1,811.36 = 1,052.32/x
  3. Step 3: Cross multiply
    1,312.48x = 1,811.36 × 1,052.32
  4. Step 4: Simplify right side
    1,312.48x = 1,906,130.36
  5. Step 5: Solve for x
    x = 1,906,130.36/1,312.48
  6. Step 6: Final answer
    x = 1,452.31

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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.