Home / 1,420.21-2,130.42-598.57

Finding the Fourth Proportional to 1,420.21, 2,130.42 and 598.57

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Solution

The fourth proportional to 1,420.21, 2,130.42 and 598.57 is: 897.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420.21 : 2,130.42 = 598.57 : x
  2. Step 2: Convert to fraction form
    1,420.21/2,130.42 = 598.57/x
  3. Step 3: Cross multiply
    1,420.21x = 2,130.42 × 598.57
  4. Step 4: Simplify right side
    1,420.21x = 1,275,205.50
  5. Step 5: Solve for x
    x = 1,275,205.50/1,420.21
  6. Step 6: Final answer
    x = 897.90

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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.