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Finding the Fourth Proportional to 7,075.80, 10,612.94 and 2,916.32

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Solution

The fourth proportional to 7,075.80, 10,612.94 and 2,916.32 is: 4,374.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,075.80 : 10,612.94 = 2,916.32 : x
  2. Step 2: Convert to fraction form
    7,075.80/10,612.94 = 2,916.32/x
  3. Step 3: Cross multiply
    7,075.80x = 10,612.94 × 2,916.32
  4. Step 4: Simplify right side
    7,075.80x = 30,950,661.53
  5. Step 5: Solve for x
    x = 30,950,661.53/7,075.80
  6. Step 6: Final answer
    x = 4,374.16

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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.