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Finding the Fourth Proportional to 8,643.61, 12,963.85 and 2,402.07

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Solution

The fourth proportional to 8,643.61, 12,963.85 and 2,402.07 is: 3,602.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,643.61 : 12,963.85 = 2,402.07 : x
  2. Step 2: Convert to fraction form
    8,643.61/12,963.85 = 2,402.07/x
  3. Step 3: Cross multiply
    8,643.61x = 12,963.85 × 2,402.07
  4. Step 4: Simplify right side
    8,643.61x = 31,140,075.17
  5. Step 5: Solve for x
    x = 31,140,075.17/8,643.61
  6. Step 6: Final answer
    x = 3,602.67

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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.