Home / 7,075.80-10,613.70-4,490.20

Finding the Fourth Proportional to 7,075.80, 10,613.70 and 4,490.20

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Solution

The fourth proportional to 7,075.80, 10,613.70 and 4,490.20 is: 6,735.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,075.80 : 10,613.70 = 4,490.20 : x
  2. Step 2: Convert to fraction form
    7,075.80/10,613.70 = 4,490.20/x
  3. Step 3: Cross multiply
    7,075.80x = 10,613.70 × 4,490.20
  4. Step 4: Simplify right side
    7,075.80x = 47,657,635.74
  5. Step 5: Solve for x
    x = 47,657,635.74/7,075.80
  6. Step 6: Final answer
    x = 6,735.30

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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.