Home / 5,088.32-7,631.46-1,390.24

Finding the Fourth Proportional to 5,088.32, 7,631.46 and 1,390.24

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Solution

The fourth proportional to 5,088.32, 7,631.46 and 1,390.24 is: 2,085.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,088.32 : 7,631.46 = 1,390.24 : x
  2. Step 2: Convert to fraction form
    5,088.32/7,631.46 = 1,390.24/x
  3. Step 3: Cross multiply
    5,088.32x = 7,631.46 × 1,390.24
  4. Step 4: Simplify right side
    5,088.32x = 10,609,560.95
  5. Step 5: Solve for x
    x = 10,609,560.95/5,088.32
  6. Step 6: Final answer
    x = 2,085.08

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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.