Home / 1,310.21-1,964.80-530.01

Finding the Fourth Proportional to 1,310.21, 1,964.80 and 530.01

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Solution

The fourth proportional to 1,310.21, 1,964.80 and 530.01 is: 794.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310.21 : 1,964.80 = 530.01 : x
  2. Step 2: Convert to fraction form
    1,310.21/1,964.80 = 530.01/x
  3. Step 3: Cross multiply
    1,310.21x = 1,964.80 × 530.01
  4. Step 4: Simplify right side
    1,310.21x = 1,041,356.94
  5. Step 5: Solve for x
    x = 1,041,356.94/1,310.21
  6. Step 6: Final answer
    x = 794.80

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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.