Home / 1,412.48-2,106.79-1,331.17

Finding the Fourth Proportional to 1,412.48, 2,106.79 and 1,331.17

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Solution

The fourth proportional to 1,412.48, 2,106.79 and 1,331.17 is: 1,985.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,412.48 : 2,106.79 = 1,331.17 : x
  2. Step 2: Convert to fraction form
    1,412.48/2,106.79 = 1,331.17/x
  3. Step 3: Cross multiply
    1,412.48x = 2,106.79 × 1,331.17
  4. Step 4: Simplify right side
    1,412.48x = 2,804,487.05
  5. Step 5: Solve for x
    x = 2,804,487.05/1,412.48
  6. Step 6: Final answer
    x = 1,985.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.