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Finding the Fourth Proportional to 3,130.95, 4,698.74 and 1,487.50

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Solution

The fourth proportional to 3,130.95, 4,698.74 and 1,487.50 is: 2,232.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.95 : 4,698.74 = 1,487.50 : x
  2. Step 2: Convert to fraction form
    3,130.95/4,698.74 = 1,487.50/x
  3. Step 3: Cross multiply
    3,130.95x = 4,698.74 × 1,487.50
  4. Step 4: Simplify right side
    3,130.95x = 6,989,367.72
  5. Step 5: Solve for x
    x = 6,989,367.72/3,130.95
  6. Step 6: Final answer
    x = 2,232.34

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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.