Home / 1,653.30-2,280.51-1,155.75

Finding the Fourth Proportional to 1,653.30, 2,280.51 and 1,155.75

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Solution

The fourth proportional to 1,653.30, 2,280.51 and 1,155.75 is: 1,594.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,653.30 : 2,280.51 = 1,155.75 : x
  2. Step 2: Convert to fraction form
    1,653.30/2,280.51 = 1,155.75/x
  3. Step 3: Cross multiply
    1,653.30x = 2,280.51 × 1,155.75
  4. Step 4: Simplify right side
    1,653.30x = 2,635,707.98
  5. Step 5: Solve for x
    x = 2,635,707.98/1,653.30
  6. Step 6: Final answer
    x = 1,594.21

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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.