Home / 1,535.73-2,118.63-1,038.19

Finding the Fourth Proportional to 1,535.73, 2,118.63 and 1,038.19

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Solution

The fourth proportional to 1,535.73, 2,118.63 and 1,038.19 is: 1,432.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.73 : 2,118.63 = 1,038.19 : x
  2. Step 2: Convert to fraction form
    1,535.73/2,118.63 = 1,038.19/x
  3. Step 3: Cross multiply
    1,535.73x = 2,118.63 × 1,038.19
  4. Step 4: Simplify right side
    1,535.73x = 2,199,539.08
  5. Step 5: Solve for x
    x = 2,199,539.08/1,535.73
  6. Step 6: Final answer
    x = 1,432.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.