Home / 1,583.02-2,374.26-428.50

Finding the Fourth Proportional to 1,583.02, 2,374.26 and 428.50

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Solution

The fourth proportional to 1,583.02, 2,374.26 and 428.50 is: 642.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,583.02 : 2,374.26 = 428.50 : x
  2. Step 2: Convert to fraction form
    1,583.02/2,374.26 = 428.50/x
  3. Step 3: Cross multiply
    1,583.02x = 2,374.26 × 428.50
  4. Step 4: Simplify right side
    1,583.02x = 1,017,370.41
  5. Step 5: Solve for x
    x = 1,017,370.41/1,583.02
  6. Step 6: Final answer
    x = 642.68

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Double scale
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1.5x scale

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.