Home / 1,920.52-2,880.55-1,130.36

Finding the Fourth Proportional to 1,920.52, 2,880.55 and 1,130.36

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Solution

The fourth proportional to 1,920.52, 2,880.55 and 1,130.36 is: 1,695.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920.52 : 2,880.55 = 1,130.36 : x
  2. Step 2: Convert to fraction form
    1,920.52/2,880.55 = 1,130.36/x
  3. Step 3: Cross multiply
    1,920.52x = 2,880.55 × 1,130.36
  4. Step 4: Simplify right side
    1,920.52x = 3,256,044.10
  5. Step 5: Solve for x
    x = 3,256,044.10/1,920.52
  6. Step 6: Final answer
    x = 1,695.40

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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.