Home / 2,176.40-3,264.60-1,312.40

Finding the Fourth Proportional to 2,176.40, 3,264.60 and 1,312.40

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Solution

The fourth proportional to 2,176.40, 3,264.60 and 1,312.40 is: 1,968.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,176.40 : 3,264.60 = 1,312.40 : x
  2. Step 2: Convert to fraction form
    2,176.40/3,264.60 = 1,312.40/x
  3. Step 3: Cross multiply
    2,176.40x = 3,264.60 × 1,312.40
  4. Step 4: Simplify right side
    2,176.40x = 4,284,461.04
  5. Step 5: Solve for x
    x = 4,284,461.04/2,176.40
  6. Step 6: Final answer
    x = 1,968.60

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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.