Home / 3,130.25-4,319.63-1,803.67

Finding the Fourth Proportional to 3,130.25, 4,319.63 and 1,803.67

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Solution

The fourth proportional to 3,130.25, 4,319.63 and 1,803.67 is: 2,489.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.25 : 4,319.63 = 1,803.67 : x
  2. Step 2: Convert to fraction form
    3,130.25/4,319.63 = 1,803.67/x
  3. Step 3: Cross multiply
    3,130.25x = 4,319.63 × 1,803.67
  4. Step 4: Simplify right side
    3,130.25x = 7,791,173.99
  5. Step 5: Solve for x
    x = 7,791,173.99/3,130.25
  6. Step 6: Final answer
    x = 2,489.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.