Home / 5,075.74-7,005.27-2,980.54

Finding the Fourth Proportional to 5,075.74, 7,005.27 and 2,980.54

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Solution

The fourth proportional to 5,075.74, 7,005.27 and 2,980.54 is: 4,113.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,075.74 : 7,005.27 = 2,980.54 : x
  2. Step 2: Convert to fraction form
    5,075.74/7,005.27 = 2,980.54/x
  3. Step 3: Cross multiply
    5,075.74x = 7,005.27 × 2,980.54
  4. Step 4: Simplify right side
    5,075.74x = 20,879,487.45
  5. Step 5: Solve for x
    x = 20,879,487.45/5,075.74
  6. Step 6: Final answer
    x = 4,113.58

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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.