Home / 1,746.78-2,621.28-1,277.40

Finding the Fourth Proportional to 1,746.78, 2,621.28 and 1,277.40

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Solution

The fourth proportional to 1,746.78, 2,621.28 and 1,277.40 is: 1,916.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,746.78 : 2,621.28 = 1,277.40 : x
  2. Step 2: Convert to fraction form
    1,746.78/2,621.28 = 1,277.40/x
  3. Step 3: Cross multiply
    1,746.78x = 2,621.28 × 1,277.40
  4. Step 4: Simplify right side
    1,746.78x = 3,348,423.07
  5. Step 5: Solve for x
    x = 3,348,423.07/1,746.78
  6. Step 6: Final answer
    x = 1,916.91

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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.