Home / 2,312.74-3,192.18-1,428.04

Finding the Fourth Proportional to 2,312.74, 3,192.18 and 1,428.04

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Solution

The fourth proportional to 2,312.74, 3,192.18 and 1,428.04 is: 1,971.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,312.74 : 3,192.18 = 1,428.04 : x
  2. Step 2: Convert to fraction form
    2,312.74/3,192.18 = 1,428.04/x
  3. Step 3: Cross multiply
    2,312.74x = 3,192.18 × 1,428.04
  4. Step 4: Simplify right side
    2,312.74x = 4,558,559.36
  5. Step 5: Solve for x
    x = 4,558,559.36/2,312.74
  6. Step 6: Final answer
    x = 1,971.06

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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.