Home / 2,136.24-2,946.17-1,389.93

Finding the Fourth Proportional to 2,136.24, 2,946.17 and 1,389.93

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Solution

The fourth proportional to 2,136.24, 2,946.17 and 1,389.93 is: 1,916.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136.24 : 2,946.17 = 1,389.93 : x
  2. Step 2: Convert to fraction form
    2,136.24/2,946.17 = 1,389.93/x
  3. Step 3: Cross multiply
    2,136.24x = 2,946.17 × 1,389.93
  4. Step 4: Simplify right side
    2,136.24x = 4,094,970.07
  5. Step 5: Solve for x
    x = 4,094,970.07/2,136.24
  6. Step 6: Final answer
    x = 1,916.91

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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.