Home / 9,319.40-12,860.49-5,127.64

Finding the Fourth Proportional to 9,319.40, 12,860.49 and 5,127.64

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Solution

The fourth proportional to 9,319.40, 12,860.49 and 5,127.64 is: 7,075.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,319.40 : 12,860.49 = 5,127.64 : x
  2. Step 2: Convert to fraction form
    9,319.40/12,860.49 = 5,127.64/x
  3. Step 3: Cross multiply
    9,319.40x = 12,860.49 × 5,127.64
  4. Step 4: Simplify right side
    9,319.40x = 65,943,962.94
  5. Step 5: Solve for x
    x = 65,943,962.94/9,319.40
  6. Step 6: Final answer
    x = 7,075.99

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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.