Home / 5,276.30-7,281.76-2,918.90

Finding the Fourth Proportional to 5,276.30, 7,281.76 and 2,918.90

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Solution

The fourth proportional to 5,276.30, 7,281.76 and 2,918.90 is: 4,028.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,276.30 : 7,281.76 = 2,918.90 : x
  2. Step 2: Convert to fraction form
    5,276.30/7,281.76 = 2,918.90/x
  3. Step 3: Cross multiply
    5,276.30x = 7,281.76 × 2,918.90
  4. Step 4: Simplify right side
    5,276.30x = 21,254,729.26
  5. Step 5: Solve for x
    x = 21,254,729.26/5,276.30
  6. Step 6: Final answer
    x = 4,028.34

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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.