Home / 8,075.28-12,113.02-5,319.60

Finding the Fourth Proportional to 8,075.28, 12,113.02 and 5,319.60

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Solution

The fourth proportional to 8,075.28, 12,113.02 and 5,319.60 is: 7,979.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,075.28 : 12,113.02 = 5,319.60 : x
  2. Step 2: Convert to fraction form
    8,075.28/12,113.02 = 5,319.60/x
  3. Step 3: Cross multiply
    8,075.28x = 12,113.02 × 5,319.60
  4. Step 4: Simplify right side
    8,075.28x = 64,436,421.19
  5. Step 5: Solve for x
    x = 64,436,421.19/8,075.28
  6. Step 6: Final answer
    x = 7,979.47

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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.