Home / 8,715.86-13,075.64-2,477.78

Finding the Fourth Proportional to 8,715.86, 13,075.64 and 2,477.78

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Solution

The fourth proportional to 8,715.86, 13,075.64 and 2,477.78 is: 3,717.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,715.86 : 13,075.64 = 2,477.78 : x
  2. Step 2: Convert to fraction form
    8,715.86/13,075.64 = 2,477.78/x
  3. Step 3: Cross multiply
    8,715.86x = 13,075.64 × 2,477.78
  4. Step 4: Simplify right side
    8,715.86x = 32,398,500.10
  5. Step 5: Solve for x
    x = 32,398,500.10/8,715.86
  6. Step 6: Final answer
    x = 3,717.19

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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.