Home / 1,558.40-2,338.40-1,038.77

Finding the Fourth Proportional to 1,558.40, 2,338.40 and 1,038.77

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Solution

The fourth proportional to 1,558.40, 2,338.40 and 1,038.77 is: 1,558.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,558.40 : 2,338.40 = 1,038.77 : x
  2. Step 2: Convert to fraction form
    1,558.40/2,338.40 = 1,038.77/x
  3. Step 3: Cross multiply
    1,558.40x = 2,338.40 × 1,038.77
  4. Step 4: Simplify right side
    1,558.40x = 2,429,054.57
  5. Step 5: Solve for x
    x = 2,429,054.57/1,558.40
  6. Step 6: Final answer
    x = 1,558.68

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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.