Home / 5,159.24-7,118.90-2,920.64

Finding the Fourth Proportional to 5,159.24, 7,118.90 and 2,920.64

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Solution

The fourth proportional to 5,159.24, 7,118.90 and 2,920.64 is: 4,030.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,159.24 : 7,118.90 = 2,920.64 : x
  2. Step 2: Convert to fraction form
    5,159.24/7,118.90 = 2,920.64/x
  3. Step 3: Cross multiply
    5,159.24x = 7,118.90 × 2,920.64
  4. Step 4: Simplify right side
    5,159.24x = 20,791,693.90
  5. Step 5: Solve for x
    x = 20,791,693.90/5,159.24
  6. Step 6: Final answer
    x = 4,030.00

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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.