Home / 1,359.10-2,038.64-578.98

Finding the Fourth Proportional to 1,359.10, 2,038.64 and 578.98

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Solution

The fourth proportional to 1,359.10, 2,038.64 and 578.98 is: 868.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,359.10 : 2,038.64 = 578.98 : x
  2. Step 2: Convert to fraction form
    1,359.10/2,038.64 = 578.98/x
  3. Step 3: Cross multiply
    1,359.10x = 2,038.64 × 578.98
  4. Step 4: Simplify right side
    1,359.10x = 1,180,331.79
  5. Step 5: Solve for x
    x = 1,180,331.79/1,359.10
  6. Step 6: Final answer
    x = 868.47

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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.