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Finding the Fourth Proportional to 7,075.95, 9,765.12 and 3,931.93

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Solution

The fourth proportional to 7,075.95, 9,765.12 and 3,931.93 is: 5,426.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,075.95 : 9,765.12 = 3,931.93 : x
  2. Step 2: Convert to fraction form
    7,075.95/9,765.12 = 3,931.93/x
  3. Step 3: Cross multiply
    7,075.95x = 9,765.12 × 3,931.93
  4. Step 4: Simplify right side
    7,075.95x = 38,395,768.28
  5. Step 5: Solve for x
    x = 38,395,768.28/7,075.95
  6. Step 6: Final answer
    x = 5,426.24

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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.