Home / 1,359.08-2,038.40-384.95

Finding the Fourth Proportional to 1,359.08, 2,038.40 and 384.95

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Solution

The fourth proportional to 1,359.08, 2,038.40 and 384.95 is: 577.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,359.08 : 2,038.40 = 384.95 : x
  2. Step 2: Convert to fraction form
    1,359.08/2,038.40 = 384.95/x
  3. Step 3: Cross multiply
    1,359.08x = 2,038.40 × 384.95
  4. Step 4: Simplify right side
    1,359.08x = 784,686.69
  5. Step 5: Solve for x
    x = 784,686.69/1,359.08
  6. Step 6: Final answer
    x = 577.37

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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.