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Finding the Fourth Proportional to 7,005.76, 10,510.18 and 2,075.78

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Solution

The fourth proportional to 7,005.76, 10,510.18 and 2,075.78 is: 3,114.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,005.76 : 10,510.18 = 2,075.78 : x
  2. Step 2: Convert to fraction form
    7,005.76/10,510.18 = 2,075.78/x
  3. Step 3: Cross multiply
    7,005.76x = 10,510.18 × 2,075.78
  4. Step 4: Simplify right side
    7,005.76x = 21,816,821.44
  5. Step 5: Solve for x
    x = 21,816,821.44/7,005.76
  6. Step 6: Final answer
    x = 3,114.13

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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.