Home / 3,931.48-5,422.08-2,810.32

Finding the Fourth Proportional to 3,931.48, 5,422.08 and 2,810.32

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Solution

The fourth proportional to 3,931.48, 5,422.08 and 2,810.32 is: 3,875.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.48 : 5,422.08 = 2,810.32 : x
  2. Step 2: Convert to fraction form
    3,931.48/5,422.08 = 2,810.32/x
  3. Step 3: Cross multiply
    3,931.48x = 5,422.08 × 2,810.32
  4. Step 4: Simplify right side
    3,931.48x = 15,237,779.87
  5. Step 5: Solve for x
    x = 15,237,779.87/3,931.48
  6. Step 6: Final answer
    x = 3,875.84

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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.