Home / 2,390.40-3,585.56-1,090.32

Finding the Fourth Proportional to 2,390.40, 3,585.56 and 1,090.32

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Solution

The fourth proportional to 2,390.40, 3,585.56 and 1,090.32 is: 1,635.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,390.40 : 3,585.56 = 1,090.32 : x
  2. Step 2: Convert to fraction form
    2,390.40/3,585.56 = 1,090.32/x
  3. Step 3: Cross multiply
    2,390.40x = 3,585.56 × 1,090.32
  4. Step 4: Simplify right side
    2,390.40x = 3,909,407.78
  5. Step 5: Solve for x
    x = 3,909,407.78/2,390.40
  6. Step 6: Final answer
    x = 1,635.46

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1.5x scale

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.