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Finding the Fourth Proportional to 2,970.36, 4,453.36 and 1,931.40

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Solution

The fourth proportional to 2,970.36, 4,453.36 and 1,931.40 is: 2,895.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,970.36 : 4,453.36 = 1,931.40 : x
  2. Step 2: Convert to fraction form
    2,970.36/4,453.36 = 1,931.40/x
  3. Step 3: Cross multiply
    2,970.36x = 4,453.36 × 1,931.40
  4. Step 4: Simplify right side
    2,970.36x = 8,601,219.50
  5. Step 5: Solve for x
    x = 8,601,219.50/2,970.36
  6. Step 6: Final answer
    x = 2,895.68

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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.