Home / 1,875.28-2,585.44-1,284.80

Finding the Fourth Proportional to 1,875.28, 2,585.44 and 1,284.80

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Solution

The fourth proportional to 1,875.28, 2,585.44 and 1,284.80 is: 1,771.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,875.28 : 2,585.44 = 1,284.80 : x
  2. Step 2: Convert to fraction form
    1,875.28/2,585.44 = 1,284.80/x
  3. Step 3: Cross multiply
    1,875.28x = 2,585.44 × 1,284.80
  4. Step 4: Simplify right side
    1,875.28x = 3,321,773.31
  5. Step 5: Solve for x
    x = 3,321,773.31/1,875.28
  6. Step 6: Final answer
    x = 1,771.35

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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.