Home / 1,875.96-2,589.93-1,287.36

Finding the Fourth Proportional to 1,875.96, 2,589.93 and 1,287.36

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Solution

The fourth proportional to 1,875.96, 2,589.93 and 1,287.36 is: 1,777.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,875.96 : 2,589.93 = 1,287.36 : x
  2. Step 2: Convert to fraction form
    1,875.96/2,589.93 = 1,287.36/x
  3. Step 3: Cross multiply
    1,875.96x = 2,589.93 × 1,287.36
  4. Step 4: Simplify right side
    1,875.96x = 3,334,172.28
  5. Step 5: Solve for x
    x = 3,334,172.28/1,875.96
  6. Step 6: Final answer
    x = 1,777.32

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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.