Home / 2,646.10-3,970.50-1,087.30

Finding the Fourth Proportional to 2,646.10, 3,970.50 and 1,087.30

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Solution

The fourth proportional to 2,646.10, 3,970.50 and 1,087.30 is: 1,631.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,646.10 : 3,970.50 = 1,087.30 : x
  2. Step 2: Convert to fraction form
    2,646.10/3,970.50 = 1,087.30/x
  3. Step 3: Cross multiply
    2,646.10x = 3,970.50 × 1,087.30
  4. Step 4: Simplify right side
    2,646.10x = 4,317,124.65
  5. Step 5: Solve for x
    x = 4,317,124.65/2,646.10
  6. Step 6: Final answer
    x = 1,631.50

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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.